Home / 281,939.47-422,956.59-139,791.76

Finding the Fourth Proportional to 281,939.47, 422,956.59 and 139,791.76

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Solution

The fourth proportional to 281,939.47, 422,956.59 and 139,791.76 is: 209,711.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,939.47 : 422,956.59 = 139,791.76 : x
  2. Step 2: Convert to fraction form
    281,939.47/422,956.59 = 139,791.76/x
  3. Step 3: Cross multiply
    281,939.47x = 422,956.59 × 139,791.76
  4. Step 4: Simplify right side
    281,939.47x = 59,125,843,305.96
  5. Step 5: Solve for x
    x = 59,125,843,305.96/281,939.47
  6. Step 6: Final answer
    x = 209,711.13

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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.