Home / 439,724.10-660,023.55-215,337.90

Finding the Fourth Proportional to 439,724.10, 660,023.55 and 215,337.90

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Solution

The fourth proportional to 439,724.10, 660,023.55 and 215,337.90 is: 323,221.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,724.10 : 660,023.55 = 215,337.90 : x
  2. Step 2: Convert to fraction form
    439,724.10/660,023.55 = 215,337.90/x
  3. Step 3: Cross multiply
    439,724.10x = 660,023.55 × 215,337.90
  4. Step 4: Simplify right side
    439,724.10x = 142,128,085,207.55
  5. Step 5: Solve for x
    x = 142,128,085,207.55/439,724.10
  6. Step 6: Final answer
    x = 323,221.05

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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.