Home / 281,105.28-387,925.26-153,781.80

Finding the Fourth Proportional to 281,105.28, 387,925.26 and 153,781.80

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Solution

The fourth proportional to 281,105.28, 387,925.26 and 153,781.80 is: 212,218.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,105.28 : 387,925.26 = 153,781.80 : x
  2. Step 2: Convert to fraction form
    281,105.28/387,925.26 = 153,781.80/x
  3. Step 3: Cross multiply
    281,105.28x = 387,925.26 × 153,781.80
  4. Step 4: Simplify right side
    281,105.28x = 59,655,844,748.27
  5. Step 5: Solve for x
    x = 59,655,844,748.27/281,105.28
  6. Step 6: Final answer
    x = 212,218.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.