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Finding the Fourth Proportional to 243,321.71, 335,791.17 and 141,363.77

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Solution

The fourth proportional to 243,321.71, 335,791.17 and 141,363.77 is: 195,086.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,321.71 : 335,791.17 = 141,363.77 : x
  2. Step 2: Convert to fraction form
    243,321.71/335,791.17 = 141,363.77/x
  3. Step 3: Cross multiply
    243,321.71x = 335,791.17 × 141,363.77
  4. Step 4: Simplify right side
    243,321.71x = 47,468,704,044.96
  5. Step 5: Solve for x
    x = 47,468,704,044.96/243,321.71
  6. Step 6: Final answer
    x = 195,086.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.