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Finding the Fourth Proportional to 440,503.92, 660,668.40 and 215,767.80

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Solution

The fourth proportional to 440,503.92, 660,668.40 and 215,767.80 is: 323,608.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,503.92 : 660,668.40 = 215,767.80 : x
  2. Step 2: Convert to fraction form
    440,503.92/660,668.40 = 215,767.80/x
  3. Step 3: Cross multiply
    440,503.92x = 660,668.40 × 215,767.80
  4. Step 4: Simplify right side
    440,503.92x = 142,550,967,197.52
  5. Step 5: Solve for x
    x = 142,550,967,197.52/440,503.92
  6. Step 6: Final answer
    x = 323,608.85

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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.