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Finding the Fourth Proportional to 435,805.20, 653,689.94 and 120,254.04

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Solution

The fourth proportional to 435,805.20, 653,689.94 and 120,254.04 is: 180,376.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,805.20 : 653,689.94 = 120,254.04 : x
  2. Step 2: Convert to fraction form
    435,805.20/653,689.94 = 120,254.04/x
  3. Step 3: Cross multiply
    435,805.20x = 653,689.94 × 120,254.04
  4. Step 4: Simplify right side
    435,805.20x = 78,608,856,192.36
  5. Step 5: Solve for x
    x = 78,608,856,192.36/435,805.20
  6. Step 6: Final answer
    x = 180,376.13

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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.