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Finding the Fourth Proportional to 231,473.90, 319,463.44 and 129,505.08

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Solution

The fourth proportional to 231,473.90, 319,463.44 and 129,505.08 is: 178,733.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,473.90 : 319,463.44 = 129,505.08 : x
  2. Step 2: Convert to fraction form
    231,473.90/319,463.44 = 129,505.08/x
  3. Step 3: Cross multiply
    231,473.90x = 319,463.44 × 129,505.08
  4. Step 4: Simplify right side
    231,473.90x = 41,372,138,354.28
  5. Step 5: Solve for x
    x = 41,372,138,354.28/231,473.90
  6. Step 6: Final answer
    x = 178,733.49

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1.5x scale

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.