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Finding the Fourth Proportional to 391,614.94, 587,684.85 and 251,471.98

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Solution

The fourth proportional to 391,614.94, 587,684.85 and 251,471.98 is: 377,376.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,614.94 : 587,684.85 = 251,471.98 : x
  2. Step 2: Convert to fraction form
    391,614.94/587,684.85 = 251,471.98/x
  3. Step 3: Cross multiply
    391,614.94x = 587,684.85 × 251,471.98
  4. Step 4: Simplify right side
    391,614.94x = 147,786,272,845.50
  5. Step 5: Solve for x
    x = 147,786,272,845.50/391,614.94
  6. Step 6: Final answer
    x = 377,376.49

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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.