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Finding the Fourth Proportional to 391,373.90, 587,307.90 and 166,734.44

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Solution

The fourth proportional to 391,373.90, 587,307.90 and 166,734.44 is: 250,206.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,373.90 : 587,307.90 = 166,734.44 : x
  2. Step 2: Convert to fraction form
    391,373.90/587,307.90 = 166,734.44/x
  3. Step 3: Cross multiply
    391,373.90x = 587,307.90 × 166,734.44
  4. Step 4: Simplify right side
    391,373.90x = 97,924,453,814.08
  5. Step 5: Solve for x
    x = 97,924,453,814.08/391,373.90
  6. Step 6: Final answer
    x = 250,206.91

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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.