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Finding the Fourth Proportional to 440,187.67, 660,194.02 and 215,451.55

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Solution

The fourth proportional to 440,187.67, 660,194.02 and 215,451.55 is: 323,134.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,187.67 : 660,194.02 = 215,451.55 : x
  2. Step 2: Convert to fraction form
    440,187.67/660,194.02 = 215,451.55/x
  3. Step 3: Cross multiply
    440,187.67x = 660,194.02 × 215,451.55
  4. Step 4: Simplify right side
    440,187.67x = 142,239,824,909.73
  5. Step 5: Solve for x
    x = 142,239,824,909.73/440,187.67
  6. Step 6: Final answer
    x = 323,134.51

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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.