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Finding the Fourth Proportional to 449,363.70, 674,008.68 and 133,820.64

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Solution

The fourth proportional to 449,363.70, 674,008.68 and 133,820.64 is: 200,719.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,363.70 : 674,008.68 = 133,820.64 : x
  2. Step 2: Convert to fraction form
    449,363.70/674,008.68 = 133,820.64/x
  3. Step 3: Cross multiply
    449,363.70x = 674,008.68 × 133,820.64
  4. Step 4: Simplify right side
    449,363.70x = 90,196,272,923.16
  5. Step 5: Solve for x
    x = 90,196,272,923.16/449,363.70
  6. Step 6: Final answer
    x = 200,719.98

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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.