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Finding the Fourth Proportional to 399,174, 598,856.64 and 132,936.80

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Solution

The fourth proportional to 399,174, 598,856.64 and 132,936.80 is: 199,437.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,174 : 598,856.64 = 132,936.80 : x
  2. Step 2: Convert to fraction form
    399,174/598,856.64 = 132,936.80/x
  3. Step 3: Cross multiply
    399,174x = 598,856.64 × 132,936.80
  4. Step 4: Simplify right side
    399,174x = 79,610,085,380.35
  5. Step 5: Solve for x
    x = 79,610,085,380.35/399,174
  6. Step 6: Final answer
    x = 199,437.05

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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.