Home / 231,429.42-319,356-129,449.52

Finding the Fourth Proportional to 231,429.42, 319,356 and 129,449.52

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Solution

The fourth proportional to 231,429.42, 319,356 and 129,449.52 is: 178,631.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,429.42 : 319,356 = 129,449.52 : x
  2. Step 2: Convert to fraction form
    231,429.42/319,356 = 129,449.52/x
  3. Step 3: Cross multiply
    231,429.42x = 319,356 × 129,449.52
  4. Step 4: Simplify right side
    231,429.42x = 41,340,480,909.12
  5. Step 5: Solve for x
    x = 41,340,480,909.12/231,429.42
  6. Step 6: Final answer
    x = 178,631.05

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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.