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Finding the Fourth Proportional to 443,679.78, 665,388.28 and 123,754.50

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Solution

The fourth proportional to 443,679.78, 665,388.28 and 123,754.50 is: 185,595.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,679.78 : 665,388.28 = 123,754.50 : x
  2. Step 2: Convert to fraction form
    443,679.78/665,388.28 = 123,754.50/x
  3. Step 3: Cross multiply
    443,679.78x = 665,388.28 × 123,754.50
  4. Step 4: Simplify right side
    443,679.78x = 82,344,793,897.26
  5. Step 5: Solve for x
    x = 82,344,793,897.26/443,679.78
  6. Step 6: Final answer
    x = 185,595.10

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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.