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Finding the Fourth Proportional to 449,421.68, 674,278.32 and 133,881.32

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Solution

The fourth proportional to 449,421.68, 674,278.32 and 133,881.32 is: 200,865.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,421.68 : 674,278.32 = 133,881.32 : x
  2. Step 2: Convert to fraction form
    449,421.68/674,278.32 = 133,881.32/x
  3. Step 3: Cross multiply
    449,421.68x = 674,278.32 × 133,881.32
  4. Step 4: Simplify right side
    449,421.68x = 90,273,271,528.98
  5. Step 5: Solve for x
    x = 90,273,271,528.98/449,421.68
  6. Step 6: Final answer
    x = 200,865.41

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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.