Home / 287,425,335.60-431,138,003.40-82,960,081.20

Finding the Fourth Proportional to 287,425,335.60, 431,138,003.40 and 82,960,081.20

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Solution

The fourth proportional to 287,425,335.60, 431,138,003.40 and 82,960,081.20 is: 124,440,121.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,425,335.60 : 431,138,003.40 = 82,960,081.20 : x
  2. Step 2: Convert to fraction form
    287,425,335.60/431,138,003.40 = 82,960,081.20/x
  3. Step 3: Cross multiply
    287,425,335.60x = 431,138,003.40 × 82,960,081.20
  4. Step 4: Simplify right side
    287,425,335.60x = 35,767,243,770,469,876
  5. Step 5: Solve for x
    x = 35,767,243,770,469,876/287,425,335.60
  6. Step 6: Final answer
    x = 124,440,121.80

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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.