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Finding the Fourth Proportional to 391,374.40, 587,308.65 and 166,734.94

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Solution

The fourth proportional to 391,374.40, 587,308.65 and 166,734.94 is: 250,207.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,374.40 : 587,308.65 = 166,734.94 : x
  2. Step 2: Convert to fraction form
    391,374.40/587,308.65 = 166,734.94/x
  3. Step 3: Cross multiply
    391,374.40x = 587,308.65 × 166,734.94
  4. Step 4: Simplify right side
    391,374.40x = 97,924,872,519.23
  5. Step 5: Solve for x
    x = 97,924,872,519.23/391,374.40
  6. Step 6: Final answer
    x = 250,207.66

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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.