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Finding the Fourth Proportional to 449,545.43, 674,649.98 and 212,887.73

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Solution

The fourth proportional to 449,545.43, 674,649.98 and 212,887.73 is: 319,488.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,545.43 : 674,649.98 = 212,887.73 : x
  2. Step 2: Convert to fraction form
    449,545.43/674,649.98 = 212,887.73/x
  3. Step 3: Cross multiply
    449,545.43x = 674,649.98 × 212,887.73
  4. Step 4: Simplify right side
    449,545.43x = 143,624,701,722.31
  5. Step 5: Solve for x
    x = 143,624,701,722.31/449,545.43
  6. Step 6: Final answer
    x = 319,488.74

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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.