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Finding the Fourth Proportional to 453,517.03, 680,251.11 and 137,949.40

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Solution

The fourth proportional to 453,517.03, 680,251.11 and 137,949.40 is: 206,916.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,517.03 : 680,251.11 = 137,949.40 : x
  2. Step 2: Convert to fraction form
    453,517.03/680,251.11 = 137,949.40/x
  3. Step 3: Cross multiply
    453,517.03x = 680,251.11 × 137,949.40
  4. Step 4: Simplify right side
    453,517.03x = 93,840,232,473.83
  5. Step 5: Solve for x
    x = 93,840,232,473.83/453,517.03
  6. Step 6: Final answer
    x = 206,916.67

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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.