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Finding the Fourth Proportional to 391,592.12, 587,463.78 and 166,948.76

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Solution

The fourth proportional to 391,592.12, 587,463.78 and 166,948.76 is: 250,455.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,592.12 : 587,463.78 = 166,948.76 : x
  2. Step 2: Convert to fraction form
    391,592.12/587,463.78 = 166,948.76/x
  3. Step 3: Cross multiply
    391,592.12x = 587,463.78 × 166,948.76
  4. Step 4: Simplify right side
    391,592.12x = 98,076,349,615.91
  5. Step 5: Solve for x
    x = 98,076,349,615.91/391,592.12
  6. Step 6: Final answer
    x = 250,455.37

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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.