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Finding the Fourth Proportional to 664,071.20, 996,106.80 and 165,435.20

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Solution

The fourth proportional to 664,071.20, 996,106.80 and 165,435.20 is: 248,152.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,071.20 : 996,106.80 = 165,435.20 : x
  2. Step 2: Convert to fraction form
    664,071.20/996,106.80 = 165,435.20/x
  3. Step 3: Cross multiply
    664,071.20x = 996,106.80 × 165,435.20
  4. Step 4: Simplify right side
    664,071.20x = 164,791,127,679.36
  5. Step 5: Solve for x
    x = 164,791,127,679.36/664,071.20
  6. Step 6: Final answer
    x = 248,152.80

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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.