Home / 281,113.20-387,939.78-153,790.92

Finding the Fourth Proportional to 281,113.20, 387,939.78 and 153,790.92

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Solution

The fourth proportional to 281,113.20, 387,939.78 and 153,790.92 is: 212,233.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,113.20 : 387,939.78 = 153,790.92 : x
  2. Step 2: Convert to fraction form
    281,113.20/387,939.78 = 153,790.92/x
  3. Step 3: Cross multiply
    281,113.20x = 387,939.78 × 153,790.92
  4. Step 4: Simplify right side
    281,113.20x = 59,661,615,670.80
  5. Step 5: Solve for x
    x = 59,661,615,670.80/281,113.20
  6. Step 6: Final answer
    x = 212,233.42

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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.