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Finding the Fourth Proportional to 281,204.16, 421,850.23 and 91,620.52

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Solution

The fourth proportional to 281,204.16, 421,850.23 and 91,620.52 is: 137,445.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,204.16 : 421,850.23 = 91,620.52 : x
  2. Step 2: Convert to fraction form
    281,204.16/421,850.23 = 91,620.52/x
  3. Step 3: Cross multiply
    281,204.16x = 421,850.23 × 91,620.52
  4. Step 4: Simplify right side
    281,204.16x = 38,650,136,151.04
  5. Step 5: Solve for x
    x = 38,650,136,151.04/281,204.16
  6. Step 6: Final answer
    x = 137,445.11

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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.