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Finding the Fourth Proportional to 363,951.20, 545,926.80 and 313,212.80

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Solution

The fourth proportional to 363,951.20, 545,926.80 and 313,212.80 is: 469,819.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,951.20 : 545,926.80 = 313,212.80 : x
  2. Step 2: Convert to fraction form
    363,951.20/545,926.80 = 313,212.80/x
  3. Step 3: Cross multiply
    363,951.20x = 545,926.80 × 313,212.80
  4. Step 4: Simplify right side
    363,951.20x = 170,991,261,623.04
  5. Step 5: Solve for x
    x = 170,991,261,623.04/363,951.20
  6. Step 6: Final answer
    x = 469,819.20

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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.