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Finding the Fourth Proportional to 217,937.79, 327,398.79 and 129,249.47

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Solution

The fourth proportional to 217,937.79, 327,398.79 and 129,249.47 is: 194,166.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,937.79 : 327,398.79 = 129,249.47 : x
  2. Step 2: Convert to fraction form
    217,937.79/327,398.79 = 129,249.47/x
  3. Step 3: Cross multiply
    217,937.79x = 327,398.79 × 129,249.47
  4. Step 4: Simplify right side
    217,937.79x = 42,316,121,389.32
  5. Step 5: Solve for x
    x = 42,316,121,389.32/217,937.79
  6. Step 6: Final answer
    x = 194,166.06

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1.5x scale

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.