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Finding the Fourth Proportional to 641,155.80, 962,079.30 and 267,216.60

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Solution

The fourth proportional to 641,155.80, 962,079.30 and 267,216.60 is: 400,968.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,155.80 : 962,079.30 = 267,216.60 : x
  2. Step 2: Convert to fraction form
    641,155.80/962,079.30 = 267,216.60/x
  3. Step 3: Cross multiply
    641,155.80x = 962,079.30 × 267,216.60
  4. Step 4: Simplify right side
    641,155.80x = 257,083,559,476.38
  5. Step 5: Solve for x
    x = 257,083,559,476.38/641,155.80
  6. Step 6: Final answer
    x = 400,968.94

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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.