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Finding the Fourth Proportional to 664,047.20, 996,070.80 and 165,411.20

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Solution

The fourth proportional to 664,047.20, 996,070.80 and 165,411.20 is: 248,116.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,047.20 : 996,070.80 = 165,411.20 : x
  2. Step 2: Convert to fraction form
    664,047.20/996,070.80 = 165,411.20/x
  3. Step 3: Cross multiply
    664,047.20x = 996,070.80 × 165,411.20
  4. Step 4: Simplify right side
    664,047.20x = 164,761,266,312.96
  5. Step 5: Solve for x
    x = 164,761,266,312.96/664,047.20
  6. Step 6: Final answer
    x = 248,116.80

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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.