Home / 319,440.27-479,128.52-129,911.82

Finding the Fourth Proportional to 319,440.27, 479,128.52 and 129,911.82

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Solution

The fourth proportional to 319,440.27, 479,128.52 and 129,911.82 is: 194,854.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,440.27 : 479,128.52 = 129,911.82 : x
  2. Step 2: Convert to fraction form
    319,440.27/479,128.52 = 129,911.82/x
  3. Step 3: Cross multiply
    319,440.27x = 479,128.52 × 129,911.82
  4. Step 4: Simplify right side
    319,440.27x = 62,244,457,397.55
  5. Step 5: Solve for x
    x = 62,244,457,397.55/319,440.27
  6. Step 6: Final answer
    x = 194,854.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.