Home / 281,207.31-421,388.15-112,560.45

Finding the Fourth Proportional to 281,207.31, 421,388.15 and 112,560.45

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Solution

The fourth proportional to 281,207.31, 421,388.15 and 112,560.45 is: 168,671.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,207.31 : 421,388.15 = 112,560.45 : x
  2. Step 2: Convert to fraction form
    281,207.31/421,388.15 = 112,560.45/x
  3. Step 3: Cross multiply
    281,207.31x = 421,388.15 × 112,560.45
  4. Step 4: Simplify right side
    281,207.31x = 47,431,639,225.87
  5. Step 5: Solve for x
    x = 47,431,639,225.87/281,207.31
  6. Step 6: Final answer
    x = 168,671.43

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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.