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Finding the Fourth Proportional to 230,531.16, 318,141.90 and 129,927

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Solution

The fourth proportional to 230,531.16, 318,141.90 and 129,927 is: 179,304.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,531.16 : 318,141.90 = 129,927 : x
  2. Step 2: Convert to fraction form
    230,531.16/318,141.90 = 129,927/x
  3. Step 3: Cross multiply
    230,531.16x = 318,141.90 × 129,927
  4. Step 4: Simplify right side
    230,531.16x = 41,335,222,641.30
  5. Step 5: Solve for x
    x = 41,335,222,641.30/230,531.16
  6. Step 6: Final answer
    x = 179,304.28

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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.