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Finding the Fourth Proportional to 440,649, 660,971.88 and 125,105.94

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Solution

The fourth proportional to 440,649, 660,971.88 and 125,105.94 is: 187,658.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,649 : 660,971.88 = 125,105.94 : x
  2. Step 2: Convert to fraction form
    440,649/660,971.88 = 125,105.94/x
  3. Step 3: Cross multiply
    440,649x = 660,971.88 × 125,105.94
  4. Step 4: Simplify right side
    440,649x = 82,691,508,360.97
  5. Step 5: Solve for x
    x = 82,691,508,360.97/440,649
  6. Step 6: Final answer
    x = 187,658.45

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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.