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Finding the Fourth Proportional to 327,888,924.80, 491,833,387.20 and 85,551,828.80

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Solution

The fourth proportional to 327,888,924.80, 491,833,387.20 and 85,551,828.80 is: 128,327,743.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,888,924.80 : 491,833,387.20 = 85,551,828.80 : x
  2. Step 2: Convert to fraction form
    327,888,924.80/491,833,387.20 = 85,551,828.80/x
  3. Step 3: Cross multiply
    327,888,924.80x = 491,833,387.20 × 85,551,828.80
  4. Step 4: Simplify right side
    327,888,924.80x = 42,077,245,739,858,512
  5. Step 5: Solve for x
    x = 42,077,245,739,858,512/327,888,924.80
  6. Step 6: Final answer
    x = 128,327,743.20

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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.