Home / 231,210.18-319,069.13-129,235.53

Finding the Fourth Proportional to 231,210.18, 319,069.13 and 129,235.53

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Solution

The fourth proportional to 231,210.18, 319,069.13 and 129,235.53 is: 178,344.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,210.18 : 319,069.13 = 129,235.53 : x
  2. Step 2: Convert to fraction form
    231,210.18/319,069.13 = 129,235.53/x
  3. Step 3: Cross multiply
    231,210.18x = 319,069.13 × 129,235.53
  4. Step 4: Simplify right side
    231,210.18x = 41,235,068,672.52
  5. Step 5: Solve for x
    x = 41,235,068,672.52/231,210.18
  6. Step 6: Final answer
    x = 178,344.52

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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.