Home / 231,476.32-319,435.68-129,501.28

Finding the Fourth Proportional to 231,476.32, 319,435.68 and 129,501.28

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Solution

The fourth proportional to 231,476.32, 319,435.68 and 129,501.28 is: 178,710.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,476.32 : 319,435.68 = 129,501.28 : x
  2. Step 2: Convert to fraction form
    231,476.32/319,435.68 = 129,501.28/x
  3. Step 3: Cross multiply
    231,476.32x = 319,435.68 × 129,501.28
  4. Step 4: Simplify right side
    231,476.32x = 41,367,329,437.67
  5. Step 5: Solve for x
    x = 41,367,329,437.67/231,476.32
  6. Step 6: Final answer
    x = 178,710.85

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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.