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Finding the Fourth Proportional to 403,517.60, 605,130.60 and 163,530.80

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Solution

The fourth proportional to 403,517.60, 605,130.60 and 163,530.80 is: 245,237.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,517.60 : 605,130.60 = 163,530.80 : x
  2. Step 2: Convert to fraction form
    403,517.60/605,130.60 = 163,530.80/x
  3. Step 3: Cross multiply
    403,517.60x = 605,130.60 × 163,530.80
  4. Step 4: Simplify right side
    403,517.60x = 98,957,491,122.48
  5. Step 5: Solve for x
    x = 98,957,491,122.48/403,517.60
  6. Step 6: Final answer
    x = 245,237.11

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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.