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Finding the Fourth Proportional to 391,764.60, 586,772.10 and 302,316.30

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Solution

The fourth proportional to 391,764.60, 586,772.10 and 302,316.30 is: 452,799.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,764.60 : 586,772.10 = 302,316.30 : x
  2. Step 2: Convert to fraction form
    391,764.60/586,772.10 = 302,316.30/x
  3. Step 3: Cross multiply
    391,764.60x = 586,772.10 × 302,316.30
  4. Step 4: Simplify right side
    391,764.60x = 177,390,770,215.23
  5. Step 5: Solve for x
    x = 177,390,770,215.23/391,764.60
  6. Step 6: Final answer
    x = 452,799.39

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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.