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Finding the Fourth Proportional to 449,701.20, 674,465.40 and 134,168.40

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Solution

The fourth proportional to 449,701.20, 674,465.40 and 134,168.40 is: 201,226.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,701.20 : 674,465.40 = 134,168.40 : x
  2. Step 2: Convert to fraction form
    449,701.20/674,465.40 = 134,168.40/x
  3. Step 3: Cross multiply
    449,701.20x = 674,465.40 × 134,168.40
  4. Step 4: Simplify right side
    449,701.20x = 90,491,943,573.36
  5. Step 5: Solve for x
    x = 90,491,943,573.36/449,701.20
  6. Step 6: Final answer
    x = 201,226.82

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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.