Home / 231,536.80-319,509.92-129,575.21

Finding the Fourth Proportional to 231,536.80, 319,509.92 and 129,575.21

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Solution

The fourth proportional to 231,536.80, 319,509.92 and 129,575.21 is: 178,807.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,536.80 : 319,509.92 = 129,575.21 : x
  2. Step 2: Convert to fraction form
    231,536.80/319,509.92 = 129,575.21/x
  3. Step 3: Cross multiply
    231,536.80x = 319,509.92 × 129,575.21
  4. Step 4: Simplify right side
    231,536.80x = 41,400,564,333.21
  5. Step 5: Solve for x
    x = 41,400,564,333.21/231,536.80
  6. Step 6: Final answer
    x = 178,807.71

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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.