Home / 287,967,472.38-431,744,881.52-121,982,162.22

Finding the Fourth Proportional to 287,967,472.38, 431,744,881.52 and 121,982,162.22

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Solution

The fourth proportional to 287,967,472.38, 431,744,881.52 and 121,982,162.22 is: 182,885,843.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,967,472.38 : 431,744,881.52 = 121,982,162.22 : x
  2. Step 2: Convert to fraction form
    287,967,472.38/431,744,881.52 = 121,982,162.22/x
  3. Step 3: Cross multiply
    287,967,472.38x = 431,744,881.52 × 121,982,162.22
  4. Step 4: Simplify right side
    287,967,472.38x = 52,665,174,175,532,272
  5. Step 5: Solve for x
    x = 52,665,174,175,532,272/287,967,472.38
  6. Step 6: Final answer
    x = 182,885,843.81

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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.