Home / 281,330.60-421,929.66-81,598.28

Finding the Fourth Proportional to 281,330.60, 421,929.66 and 81,598.28

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Solution

The fourth proportional to 281,330.60, 421,929.66 and 81,598.28 is: 122,378.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,330.60 : 421,929.66 = 81,598.28 : x
  2. Step 2: Convert to fraction form
    281,330.60/421,929.66 = 81,598.28/x
  3. Step 3: Cross multiply
    281,330.60x = 421,929.66 × 81,598.28
  4. Step 4: Simplify right side
    281,330.60x = 34,428,734,536.98
  5. Step 5: Solve for x
    x = 34,428,734,536.98/281,330.60
  6. Step 6: Final answer
    x = 122,378.21

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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.