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Finding the Fourth Proportional to 217,957.59, 300,773.12 and 122,468.31

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Solution

The fourth proportional to 217,957.59, 300,773.12 and 122,468.31 is: 169,001.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,957.59 : 300,773.12 = 122,468.31 : x
  2. Step 2: Convert to fraction form
    217,957.59/300,773.12 = 122,468.31/x
  3. Step 3: Cross multiply
    217,957.59x = 300,773.12 × 122,468.31
  4. Step 4: Simplify right side
    217,957.59x = 36,835,175,087.49
  5. Step 5: Solve for x
    x = 36,835,175,087.49/217,957.59
  6. Step 6: Final answer
    x = 169,001.57

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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.