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Finding the Fourth Proportional to 145,397.73, 218,079.72 and 40,224.90

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Solution

The fourth proportional to 145,397.73, 218,079.72 and 40,224.90 is: 60,332.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,397.73 : 218,079.72 = 40,224.90 : x
  2. Step 2: Convert to fraction form
    145,397.73/218,079.72 = 40,224.90/x
  3. Step 3: Cross multiply
    145,397.73x = 218,079.72 × 40,224.90
  4. Step 4: Simplify right side
    145,397.73x = 8,772,234,929.03
  5. Step 5: Solve for x
    x = 8,772,234,929.03/145,397.73
  6. Step 6: Final answer
    x = 60,332.68

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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.