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Finding the Fourth Proportional to 240,780.90, 361,101.69 and 72,294.42

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Solution

The fourth proportional to 240,780.90, 361,101.69 and 72,294.42 is: 108,420.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,780.90 : 361,101.69 = 72,294.42 : x
  2. Step 2: Convert to fraction form
    240,780.90/361,101.69 = 72,294.42/x
  3. Step 3: Cross multiply
    240,780.90x = 361,101.69 × 72,294.42
  4. Step 4: Simplify right side
    240,780.90x = 26,105,637,239.57
  5. Step 5: Solve for x
    x = 26,105,637,239.57/240,780.90
  6. Step 6: Final answer
    x = 108,420.71

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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.