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Finding the Fourth Proportional to 391,281.92, 587,123.04 and 186,348.64

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Solution

The fourth proportional to 391,281.92, 587,123.04 and 186,348.64 is: 279,618.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,281.92 : 587,123.04 = 186,348.64 : x
  2. Step 2: Convert to fraction form
    391,281.92/587,123.04 = 186,348.64/x
  3. Step 3: Cross multiply
    391,281.92x = 587,123.04 × 186,348.64
  4. Step 4: Simplify right side
    391,281.92x = 109,409,580,016.67
  5. Step 5: Solve for x
    x = 109,409,580,016.67/391,281.92
  6. Step 6: Final answer
    x = 279,618.29

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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.