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Finding the Fourth Proportional to 542,154.87, 748,139.90 and 300,423.33

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Solution

The fourth proportional to 542,154.87, 748,139.90 and 300,423.33 is: 414,565.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,154.87 : 748,139.90 = 300,423.33 : x
  2. Step 2: Convert to fraction form
    542,154.87/748,139.90 = 300,423.33/x
  3. Step 3: Cross multiply
    542,154.87x = 748,139.90 × 300,423.33
  4. Step 4: Simplify right side
    542,154.87x = 224,758,678,561.75
  5. Step 5: Solve for x
    x = 224,758,678,561.75/542,154.87
  6. Step 6: Final answer
    x = 414,565.45

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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.