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Finding the Fourth Proportional to 327,269.60, 490,904.40 and 313,272.80

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Solution

The fourth proportional to 327,269.60, 490,904.40 and 313,272.80 is: 469,909.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,269.60 : 490,904.40 = 313,272.80 : x
  2. Step 2: Convert to fraction form
    327,269.60/490,904.40 = 313,272.80/x
  3. Step 3: Cross multiply
    327,269.60x = 490,904.40 × 313,272.80
  4. Step 4: Simplify right side
    327,269.60x = 153,786,995,920.32
  5. Step 5: Solve for x
    x = 153,786,995,920.32/327,269.60
  6. Step 6: Final answer
    x = 469,909.20

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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.