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Finding the Fourth Proportional to 547,087.65, 820,672.98 and 147,722.61

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Solution

The fourth proportional to 547,087.65, 820,672.98 and 147,722.61 is: 221,595.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,087.65 : 820,672.98 = 147,722.61 : x
  2. Step 2: Convert to fraction form
    547,087.65/820,672.98 = 147,722.61/x
  3. Step 3: Cross multiply
    547,087.65x = 820,672.98 × 147,722.61
  4. Step 4: Simplify right side
    547,087.65x = 121,231,954,562.08
  5. Step 5: Solve for x
    x = 121,231,954,562.08/547,087.65
  6. Step 6: Final answer
    x = 221,595.12

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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.