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Finding the Fourth Proportional to 664,272.30, 996,408.45 and 165,636.30

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Solution

The fourth proportional to 664,272.30, 996,408.45 and 165,636.30 is: 248,454.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,272.30 : 996,408.45 = 165,636.30 : x
  2. Step 2: Convert to fraction form
    664,272.30/996,408.45 = 165,636.30/x
  3. Step 3: Cross multiply
    664,272.30x = 996,408.45 × 165,636.30
  4. Step 4: Simplify right side
    664,272.30x = 165,041,408,946.74
  5. Step 5: Solve for x
    x = 165,041,408,946.74/664,272.30
  6. Step 6: Final answer
    x = 248,454.45

Related Problems

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Half scale
Find fourth proportional to 1,328,544.60, 1,992,816.90 and 331,272.60
Double scale
Find fourth proportional to 664,273.30, 996,409.95 and 165,637.30
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.