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Finding the Fourth Proportional to 272,642.58, 408,966.46 and 170,091.06

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Solution

The fourth proportional to 272,642.58, 408,966.46 and 170,091.06 is: 255,138.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,642.58 : 408,966.46 = 170,091.06 : x
  2. Step 2: Convert to fraction form
    272,642.58/408,966.46 = 170,091.06/x
  3. Step 3: Cross multiply
    272,642.58x = 408,966.46 × 170,091.06
  4. Step 4: Simplify right side
    272,642.58x = 69,561,538,685.85
  5. Step 5: Solve for x
    x = 69,561,538,685.85/272,642.58
  6. Step 6: Final answer
    x = 255,138.21

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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.