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Finding the Fourth Proportional to 542,234.05, 748,262.61 and 300,520.73

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Solution

The fourth proportional to 542,234.05, 748,262.61 and 300,520.73 is: 414,707.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,234.05 : 748,262.61 = 300,520.73 : x
  2. Step 2: Convert to fraction form
    542,234.05/748,262.61 = 300,520.73/x
  3. Step 3: Cross multiply
    542,234.05x = 748,262.61 × 300,520.73
  4. Step 4: Simplify right side
    542,234.05x = 224,868,427,659.56
  5. Step 5: Solve for x
    x = 224,868,427,659.56/542,234.05
  6. Step 6: Final answer
    x = 414,707.32

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Double scale
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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.