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Finding the Fourth Proportional to 542,355.56, 748,372.02 and 300,638

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Solution

The fourth proportional to 542,355.56, 748,372.02 and 300,638 is: 414,836.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,355.56 : 748,372.02 = 300,638 : x
  2. Step 2: Convert to fraction form
    542,355.56/748,372.02 = 300,638/x
  3. Step 3: Cross multiply
    542,355.56x = 748,372.02 × 300,638
  4. Step 4: Simplify right side
    542,355.56x = 224,989,067,348.76
  5. Step 5: Solve for x
    x = 224,989,067,348.76/542,355.56
  6. Step 6: Final answer
    x = 414,836.84

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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.