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Finding the Fourth Proportional to 447,694.89, 671,314.28 and 220,005.69

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Solution

The fourth proportional to 447,694.89, 671,314.28 and 220,005.69 is: 329,896.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,694.89 : 671,314.28 = 220,005.69 : x
  2. Step 2: Convert to fraction form
    447,694.89/671,314.28 = 220,005.69/x
  3. Step 3: Cross multiply
    447,694.89x = 671,314.28 × 220,005.69
  4. Step 4: Simplify right side
    447,694.89x = 147,692,960,278.23
  5. Step 5: Solve for x
    x = 147,692,960,278.23/447,694.89
  6. Step 6: Final answer
    x = 329,896.46

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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.