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Finding the Fourth Proportional to 312,901,672.80, 469,520,470.80 and 131,167,221.60

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Solution

The fourth proportional to 312,901,672.80, 469,520,470.80 and 131,167,221.60 is: 196,821,241.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,901,672.80 : 469,520,470.80 = 131,167,221.60 : x
  2. Step 2: Convert to fraction form
    312,901,672.80/469,520,470.80 = 131,167,221.60/x
  3. Step 3: Cross multiply
    312,901,672.80x = 469,520,470.80 × 131,167,221.60
  4. Step 4: Simplify right side
    312,901,672.80x = 61,585,695,639,159,928
  5. Step 5: Solve for x
    x = 61,585,695,639,159,928/312,901,672.80
  6. Step 6: Final answer
    x = 196,821,241.28

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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.