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Finding the Fourth Proportional to 391,940.13, 587,908.88 and 107,630.93

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Solution

The fourth proportional to 391,940.13, 587,908.88 and 107,630.93 is: 161,446.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,940.13 : 587,908.88 = 107,630.93 : x
  2. Step 2: Convert to fraction form
    391,940.13/587,908.88 = 107,630.93/x
  3. Step 3: Cross multiply
    391,940.13x = 587,908.88 × 107,630.93
  4. Step 4: Simplify right side
    391,940.13x = 63,277,178,143.33
  5. Step 5: Solve for x
    x = 63,277,178,143.33/391,940.13
  6. Step 6: Final answer
    x = 161,446.03

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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.