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Finding the Fourth Proportional to 268,791.78, 370,932.56 and 155,612.10

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Solution

The fourth proportional to 268,791.78, 370,932.56 and 155,612.10 is: 214,744.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,791.78 : 370,932.56 = 155,612.10 : x
  2. Step 2: Convert to fraction form
    268,791.78/370,932.56 = 155,612.10/x
  3. Step 3: Cross multiply
    268,791.78x = 370,932.56 × 155,612.10
  4. Step 4: Simplify right side
    268,791.78x = 57,721,594,619.98
  5. Step 5: Solve for x
    x = 57,721,594,619.98/268,791.78
  6. Step 6: Final answer
    x = 214,744.64

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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.