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Finding the Fourth Proportional to 262,217.28, 361,860 and 149,040

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Solution

The fourth proportional to 262,217.28, 361,860 and 149,040 is: 205,675.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,217.28 : 361,860 = 149,040 : x
  2. Step 2: Convert to fraction form
    262,217.28/361,860 = 149,040/x
  3. Step 3: Cross multiply
    262,217.28x = 361,860 × 149,040
  4. Step 4: Simplify right side
    262,217.28x = 53,931,614,400
  5. Step 5: Solve for x
    x = 53,931,614,400/262,217.28
  6. Step 6: Final answer
    x = 205,675.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.