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Finding the Fourth Proportional to 261,690.52, 361,151.58 and 148,520.56

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Solution

The fourth proportional to 261,690.52, 361,151.58 and 148,520.56 is: 204,968.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,690.52 : 361,151.58 = 148,520.56 : x
  2. Step 2: Convert to fraction form
    261,690.52/361,151.58 = 148,520.56/x
  3. Step 3: Cross multiply
    261,690.52x = 361,151.58 × 148,520.56
  4. Step 4: Simplify right side
    261,690.52x = 53,638,434,906.48
  5. Step 5: Solve for x
    x = 53,638,434,906.48/261,690.52
  6. Step 6: Final answer
    x = 204,968.96

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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.