Home / 281,231.20-421,888.29-81,525.61

Finding the Fourth Proportional to 281,231.20, 421,888.29 and 81,525.61

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Solution

The fourth proportional to 281,231.20, 421,888.29 and 81,525.61 is: 122,300.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,231.20 : 421,888.29 = 81,525.61 : x
  2. Step 2: Convert to fraction form
    281,231.20/421,888.29 = 81,525.61/x
  3. Step 3: Cross multiply
    281,231.20x = 421,888.29 × 81,525.61
  4. Step 4: Simplify right side
    281,231.20x = 34,394,700,194.11
  5. Step 5: Solve for x
    x = 34,394,700,194.11/281,231.20
  6. Step 6: Final answer
    x = 122,300.44

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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.