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Finding the Fourth Proportional to 543,008.80, 749,340.69 and 301,286.17

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Solution

The fourth proportional to 543,008.80, 749,340.69 and 301,286.17 is: 415,768.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,008.80 : 749,340.69 = 301,286.17 : x
  2. Step 2: Convert to fraction form
    543,008.80/749,340.69 = 301,286.17/x
  3. Step 3: Cross multiply
    543,008.80x = 749,340.69 × 301,286.17
  4. Step 4: Simplify right side
    543,008.80x = 225,765,982,768.55
  5. Step 5: Solve for x
    x = 225,765,982,768.55/543,008.80
  6. Step 6: Final answer
    x = 415,768.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.