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Finding the Fourth Proportional to 542,139.20, 748,416.48 and 360,958.40

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Solution

The fourth proportional to 542,139.20, 748,416.48 and 360,958.40 is: 498,298.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,139.20 : 748,416.48 = 360,958.40 : x
  2. Step 2: Convert to fraction form
    542,139.20/748,416.48 = 360,958.40/x
  3. Step 3: Cross multiply
    542,139.20x = 748,416.48 × 360,958.40
  4. Step 4: Simplify right side
    542,139.20x = 270,147,215,154.43
  5. Step 5: Solve for x
    x = 270,147,215,154.43/542,139.20
  6. Step 6: Final answer
    x = 498,298.62

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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.