Home / 231,427.62-319,355.08-129,435.42

Finding the Fourth Proportional to 231,427.62, 319,355.08 and 129,435.42

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Solution

The fourth proportional to 231,427.62, 319,355.08 and 129,435.42 is: 178,612.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,427.62 : 319,355.08 = 129,435.42 : x
  2. Step 2: Convert to fraction form
    231,427.62/319,355.08 = 129,435.42/x
  3. Step 3: Cross multiply
    231,427.62x = 319,355.08 × 129,435.42
  4. Step 4: Simplify right side
    231,427.62x = 41,335,858,908.93
  5. Step 5: Solve for x
    x = 41,335,858,908.93/231,427.62
  6. Step 6: Final answer
    x = 178,612.47

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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.