Home / 281,104.43-387,933.29-153,780.02

Finding the Fourth Proportional to 281,104.43, 387,933.29 and 153,780.02

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Solution

The fourth proportional to 281,104.43, 387,933.29 and 153,780.02 is: 212,221.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,104.43 : 387,933.29 = 153,780.02 : x
  2. Step 2: Convert to fraction form
    281,104.43/387,933.29 = 153,780.02/x
  3. Step 3: Cross multiply
    281,104.43x = 387,933.29 × 153,780.02
  4. Step 4: Simplify right side
    281,104.43x = 59,656,388,325.97
  5. Step 5: Solve for x
    x = 59,656,388,325.97/281,104.43
  6. Step 6: Final answer
    x = 212,221.45

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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.