Home / 281,330.85-421,930.03-81,598.53

Finding the Fourth Proportional to 281,330.85, 421,930.03 and 81,598.53

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Solution

The fourth proportional to 281,330.85, 421,930.03 and 81,598.53 is: 122,378.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,330.85 : 421,930.03 = 81,598.53 : x
  2. Step 2: Convert to fraction form
    281,330.85/421,930.03 = 81,598.53/x
  3. Step 3: Cross multiply
    281,330.85x = 421,930.03 × 81,598.53
  4. Step 4: Simplify right side
    281,330.85x = 34,428,870,210.86
  5. Step 5: Solve for x
    x = 34,428,870,210.86/281,330.85
  6. Step 6: Final answer
    x = 122,378.58

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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.