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Finding the Fourth Proportional to 281,294.90, 421,944.11 and 115,082.90

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Solution

The fourth proportional to 281,294.90, 421,944.11 and 115,082.90 is: 172,625.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,294.90 : 421,944.11 = 115,082.90 : x
  2. Step 2: Convert to fraction form
    281,294.90/421,944.11 = 115,082.90/x
  3. Step 3: Cross multiply
    281,294.90x = 421,944.11 × 115,082.90
  4. Step 4: Simplify right side
    281,294.90x = 48,558,551,816.72
  5. Step 5: Solve for x
    x = 48,558,551,816.72/281,294.90
  6. Step 6: Final answer
    x = 172,625.07

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1.5x scale

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.