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Finding the Fourth Proportional to 440,279.75, 660,394.33 and 261,500.77

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Solution

The fourth proportional to 440,279.75, 660,394.33 and 261,500.77 is: 392,236.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,279.75 : 660,394.33 = 261,500.77 : x
  2. Step 2: Convert to fraction form
    440,279.75/660,394.33 = 261,500.77/x
  3. Step 3: Cross multiply
    440,279.75x = 660,394.33 × 261,500.77
  4. Step 4: Simplify right side
    440,279.75x = 172,693,627,513.77
  5. Step 5: Solve for x
    x = 172,693,627,513.77/440,279.75
  6. Step 6: Final answer
    x = 392,236.13

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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.