Home / 281,112.48-387,939.92-153,788.96

Finding the Fourth Proportional to 281,112.48, 387,939.92 and 153,788.96

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Solution

The fourth proportional to 281,112.48, 387,939.92 and 153,788.96 is: 212,231.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,112.48 : 387,939.92 = 153,788.96 : x
  2. Step 2: Convert to fraction form
    281,112.48/387,939.92 = 153,788.96/x
  3. Step 3: Cross multiply
    281,112.48x = 387,939.92 × 153,788.96
  4. Step 4: Simplify right side
    281,112.48x = 59,660,876,839.28
  5. Step 5: Solve for x
    x = 59,660,876,839.28/281,112.48
  6. Step 6: Final answer
    x = 212,231.33

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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.