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Finding the Fourth Proportional to 361,978.32, 499,517.80 and 218,713.04

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Solution

The fourth proportional to 361,978.32, 499,517.80 and 218,713.04 is: 301,816.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,978.32 : 499,517.80 = 218,713.04 : x
  2. Step 2: Convert to fraction form
    361,978.32/499,517.80 = 218,713.04/x
  3. Step 3: Cross multiply
    361,978.32x = 499,517.80 × 218,713.04
  4. Step 4: Simplify right side
    361,978.32x = 109,251,056,572.11
  5. Step 5: Solve for x
    x = 109,251,056,572.11/361,978.32
  6. Step 6: Final answer
    x = 301,816.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.