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Finding the Fourth Proportional to 521,222.50, 781,833.75 and 147,255.22

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Solution

The fourth proportional to 521,222.50, 781,833.75 and 147,255.22 is: 220,882.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,222.50 : 781,833.75 = 147,255.22 : x
  2. Step 2: Convert to fraction form
    521,222.50/781,833.75 = 147,255.22/x
  3. Step 3: Cross multiply
    521,222.50x = 781,833.75 × 147,255.22
  4. Step 4: Simplify right side
    521,222.50x = 115,129,100,859.68
  5. Step 5: Solve for x
    x = 115,129,100,859.68/521,222.50
  6. Step 6: Final answer
    x = 220,882.83

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Double scale
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Similar ratio
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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.