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Finding the Fourth Proportional to 240,780.60, 361,221.12 and 72,294.12

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Solution

The fourth proportional to 240,780.60, 361,221.12 and 72,294.12 is: 108,456.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,780.60 : 361,221.12 = 72,294.12 : x
  2. Step 2: Convert to fraction form
    240,780.60/361,221.12 = 72,294.12/x
  3. Step 3: Cross multiply
    240,780.60x = 361,221.12 × 72,294.12
  4. Step 4: Simplify right side
    240,780.60x = 26,114,162,995.81
  5. Step 5: Solve for x
    x = 26,114,162,995.81/240,780.60
  6. Step 6: Final answer
    x = 108,456.26

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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.