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Finding the Fourth Proportional to 547,318.20, 820,959.30 and 247,798.80

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Solution

The fourth proportional to 547,318.20, 820,959.30 and 247,798.80 is: 371,690.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,318.20 : 820,959.30 = 247,798.80 : x
  2. Step 2: Convert to fraction form
    547,318.20/820,959.30 = 247,798.80/x
  3. Step 3: Cross multiply
    547,318.20x = 820,959.30 × 247,798.80
  4. Step 4: Simplify right side
    547,318.20x = 203,432,729,388.84
  5. Step 5: Solve for x
    x = 203,432,729,388.84/547,318.20
  6. Step 6: Final answer
    x = 371,690.05

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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.