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Finding the Fourth Proportional to 547,221.80, 820,835.44 and 247,351.30

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Solution

The fourth proportional to 547,221.80, 820,835.44 and 247,351.30 is: 371,028.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,221.80 : 820,835.44 = 247,351.30 : x
  2. Step 2: Convert to fraction form
    547,221.80/820,835.44 = 247,351.30/x
  3. Step 3: Cross multiply
    547,221.80x = 820,835.44 × 247,351.30
  4. Step 4: Simplify right side
    547,221.80x = 203,034,713,170.07
  5. Step 5: Solve for x
    x = 203,034,713,170.07/547,221.80
  6. Step 6: Final answer
    x = 371,028.19

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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.