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Finding the Fourth Proportional to 542,472.30, 748,656.14 and 300,830.67

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Solution

The fourth proportional to 542,472.30, 748,656.14 and 300,830.67 is: 415,170.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,472.30 : 748,656.14 = 300,830.67 : x
  2. Step 2: Convert to fraction form
    542,472.30/748,656.14 = 300,830.67/x
  3. Step 3: Cross multiply
    542,472.30x = 748,656.14 × 300,830.67
  4. Step 4: Simplify right side
    542,472.30x = 225,218,726,691.66
  5. Step 5: Solve for x
    x = 225,218,726,691.66/542,472.30
  6. Step 6: Final answer
    x = 415,170.93

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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.