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Finding the Fourth Proportional to 253,229.52, 379,262.68 and 126,480.72

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Solution

The fourth proportional to 253,229.52, 379,262.68 and 126,480.72 is: 189,430.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,229.52 : 379,262.68 = 126,480.72 : x
  2. Step 2: Convert to fraction form
    253,229.52/379,262.68 = 126,480.72/x
  3. Step 3: Cross multiply
    253,229.52x = 379,262.68 × 126,480.72
  4. Step 4: Simplify right side
    253,229.52x = 47,969,416,835.53
  5. Step 5: Solve for x
    x = 47,969,416,835.53/253,229.52
  6. Step 6: Final answer
    x = 189,430.59

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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.