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Finding the Fourth Proportional to 391,301.10, 587,170.35 and 166,623.30

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Solution

The fourth proportional to 391,301.10, 587,170.35 and 166,623.30 is: 250,028.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,301.10 : 587,170.35 = 166,623.30 : x
  2. Step 2: Convert to fraction form
    391,301.10/587,170.35 = 166,623.30/x
  3. Step 3: Cross multiply
    391,301.10x = 587,170.35 × 166,623.30
  4. Step 4: Simplify right side
    391,301.10x = 97,836,261,379.16
  5. Step 5: Solve for x
    x = 97,836,261,379.16/391,301.10
  6. Step 6: Final answer
    x = 250,028.08

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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.