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Finding the Fourth Proportional to 542,423.20, 813,634.80 and 148,439.20

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Solution

The fourth proportional to 542,423.20, 813,634.80 and 148,439.20 is: 222,658.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,423.20 : 813,634.80 = 148,439.20 : x
  2. Step 2: Convert to fraction form
    542,423.20/813,634.80 = 148,439.20/x
  3. Step 3: Cross multiply
    542,423.20x = 813,634.80 × 148,439.20
  4. Step 4: Simplify right side
    542,423.20x = 120,775,298,804.16
  5. Step 5: Solve for x
    x = 120,775,298,804.16/542,423.20
  6. Step 6: Final answer
    x = 222,658.80

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.