Home / 281,340.60-421,944.66-81,608.28

Finding the Fourth Proportional to 281,340.60, 421,944.66 and 81,608.28

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Solution

The fourth proportional to 281,340.60, 421,944.66 and 81,608.28 is: 122,393.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,340.60 : 421,944.66 = 81,608.28 : x
  2. Step 2: Convert to fraction form
    281,340.60/421,944.66 = 81,608.28/x
  3. Step 3: Cross multiply
    281,340.60x = 421,944.66 × 81,608.28
  4. Step 4: Simplify right side
    281,340.60x = 34,434,177,957.78
  5. Step 5: Solve for x
    x = 34,434,177,957.78/281,340.60
  6. Step 6: Final answer
    x = 122,393.21

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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.