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Finding the Fourth Proportional to 381,809.69, 572,712.45 and 93,617.76

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Solution

The fourth proportional to 381,809.69, 572,712.45 and 93,617.76 is: 140,426.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,809.69 : 572,712.45 = 93,617.76 : x
  2. Step 2: Convert to fraction form
    381,809.69/572,712.45 = 93,617.76/x
  3. Step 3: Cross multiply
    381,809.69x = 572,712.45 × 93,617.76
  4. Step 4: Simplify right side
    381,809.69x = 53,616,056,693.11
  5. Step 5: Solve for x
    x = 53,616,056,693.11/381,809.69
  6. Step 6: Final answer
    x = 140,426.13

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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.