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Finding the Fourth Proportional to 280,230.28, 420,450.58 and 167,990.47

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Solution

The fourth proportional to 280,230.28, 420,450.58 and 167,990.47 is: 252,048.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,230.28 : 420,450.58 = 167,990.47 : x
  2. Step 2: Convert to fraction form
    280,230.28/420,450.58 = 167,990.47/x
  3. Step 3: Cross multiply
    280,230.28x = 420,450.58 × 167,990.47
  4. Step 4: Simplify right side
    280,230.28x = 70,631,690,545.97
  5. Step 5: Solve for x
    x = 70,631,690,545.97/280,230.28
  6. Step 6: Final answer
    x = 252,048.75

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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.