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Finding the Fourth Proportional to 664,167.70, 996,543.15 and 308,998.90

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Solution

The fourth proportional to 664,167.70, 996,543.15 and 308,998.90 is: 463,634.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,167.70 : 996,543.15 = 308,998.90 : x
  2. Step 2: Convert to fraction form
    664,167.70/996,543.15 = 308,998.90/x
  3. Step 3: Cross multiply
    664,167.70x = 996,543.15 × 308,998.90
  4. Step 4: Simplify right side
    664,167.70x = 307,930,737,152.54
  5. Step 5: Solve for x
    x = 307,930,737,152.54/664,167.70
  6. Step 6: Final answer
    x = 463,634.01

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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.