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Finding the Fourth Proportional to 260,209.92, 390,337.92 and 73,223.04

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Solution

The fourth proportional to 260,209.92, 390,337.92 and 73,223.04 is: 109,841.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,209.92 : 390,337.92 = 73,223.04 : x
  2. Step 2: Convert to fraction form
    260,209.92/390,337.92 = 73,223.04/x
  3. Step 3: Cross multiply
    260,209.92x = 390,337.92 × 73,223.04
  4. Step 4: Simplify right side
    260,209.92x = 28,581,729,129.68
  5. Step 5: Solve for x
    x = 28,581,729,129.68/260,209.92
  6. Step 6: Final answer
    x = 109,841.04

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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.