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Finding the Fourth Proportional to 542,568.80, 748,753.92 and 300,861.56

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Solution

The fourth proportional to 542,568.80, 748,753.92 and 300,861.56 is: 415,193.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,568.80 : 748,753.92 = 300,861.56 : x
  2. Step 2: Convert to fraction form
    542,568.80/748,753.92 = 300,861.56/x
  3. Step 3: Cross multiply
    542,568.80x = 748,753.92 × 300,861.56
  4. Step 4: Simplify right side
    542,568.80x = 225,271,272,427.32
  5. Step 5: Solve for x
    x = 225,271,272,427.32/542,568.80
  6. Step 6: Final answer
    x = 415,193.93

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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.