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Finding the Fourth Proportional to 255,133.88, 382,787.31 and 112,959.55

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Solution

The fourth proportional to 255,133.88, 382,787.31 and 112,959.55 is: 169,477.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,133.88 : 382,787.31 = 112,959.55 : x
  2. Step 2: Convert to fraction form
    255,133.88/382,787.31 = 112,959.55/x
  3. Step 3: Cross multiply
    255,133.88x = 382,787.31 × 112,959.55
  4. Step 4: Simplify right side
    255,133.88x = 43,239,480,902.74
  5. Step 5: Solve for x
    x = 43,239,480,902.74/255,133.88
  6. Step 6: Final answer
    x = 169,477.61

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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.