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Finding the Fourth Proportional to 454,080, 681,139.16 and 134,232.60

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Solution

The fourth proportional to 454,080, 681,139.16 and 134,232.60 is: 201,354.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,080 : 681,139.16 = 134,232.60 : x
  2. Step 2: Convert to fraction form
    454,080/681,139.16 = 134,232.60/x
  3. Step 3: Cross multiply
    454,080x = 681,139.16 × 134,232.60
  4. Step 4: Simplify right side
    454,080x = 91,431,080,408.62
  5. Step 5: Solve for x
    x = 91,431,080,408.62/454,080
  6. Step 6: Final answer
    x = 201,354.56

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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.