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Finding the Fourth Proportional to 449,553.56, 674,662.16 and 212,895.86

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Solution

The fourth proportional to 449,553.56, 674,662.16 and 212,895.86 is: 319,500.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,553.56 : 674,662.16 = 212,895.86 : x
  2. Step 2: Convert to fraction form
    449,553.56/674,662.16 = 212,895.86/x
  3. Step 3: Cross multiply
    449,553.56x = 674,662.16 × 212,895.86
  4. Step 4: Simplify right side
    449,553.56x = 143,632,777,921.59
  5. Step 5: Solve for x
    x = 143,632,777,921.59/449,553.56
  6. Step 6: Final answer
    x = 319,500.93

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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.