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Finding the Fourth Proportional to 542,139.76, 748,169.22 and 300,399.58

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Solution

The fourth proportional to 542,139.76, 748,169.22 and 300,399.58 is: 414,560.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,139.76 : 748,169.22 = 300,399.58 : x
  2. Step 2: Convert to fraction form
    542,139.76/748,169.22 = 300,399.58/x
  3. Step 3: Cross multiply
    542,139.76x = 748,169.22 × 300,399.58
  4. Step 4: Simplify right side
    542,139.76x = 224,749,719,456.93
  5. Step 5: Solve for x
    x = 224,749,719,456.93/542,139.76
  6. Step 6: Final answer
    x = 414,560.48

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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.