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Finding the Fourth Proportional to 261,991.12, 361,528.32 and 148,792

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Solution

The fourth proportional to 261,991.12, 361,528.32 and 148,792 is: 205,321.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,991.12 : 361,528.32 = 148,792 : x
  2. Step 2: Convert to fraction form
    261,991.12/361,528.32 = 148,792/x
  3. Step 3: Cross multiply
    261,991.12x = 361,528.32 × 148,792
  4. Step 4: Simplify right side
    261,991.12x = 53,792,521,789.44
  5. Step 5: Solve for x
    x = 53,792,521,789.44/261,991.12
  6. Step 6: Final answer
    x = 205,321.93

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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.