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Finding the Fourth Proportional to 319,635.60, 480,166.20 and 267,147.60

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Solution

The fourth proportional to 319,635.60, 480,166.20 and 267,147.60 is: 401,317.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,635.60 : 480,166.20 = 267,147.60 : x
  2. Step 2: Convert to fraction form
    319,635.60/480,166.20 = 267,147.60/x
  3. Step 3: Cross multiply
    319,635.60x = 480,166.20 × 267,147.60
  4. Step 4: Simplify right side
    319,635.60x = 128,275,247,931.12
  5. Step 5: Solve for x
    x = 128,275,247,931.12/319,635.60
  6. Step 6: Final answer
    x = 401,317.15

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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.