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Finding the Fourth Proportional to 403,772.60, 605,440.20 and 167,139.20

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Solution

The fourth proportional to 403,772.60, 605,440.20 and 167,139.20 is: 250,618.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,772.60 : 605,440.20 = 167,139.20 : x
  2. Step 2: Convert to fraction form
    403,772.60/605,440.20 = 167,139.20/x
  3. Step 3: Cross multiply
    403,772.60x = 605,440.20 × 167,139.20
  4. Step 4: Simplify right side
    403,772.60x = 101,192,790,675.84
  5. Step 5: Solve for x
    x = 101,192,790,675.84/403,772.60
  6. Step 6: Final answer
    x = 250,618.27

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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.