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Finding the Fourth Proportional to 272,617.91, 376,397.90 and 170,684.57

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Solution

The fourth proportional to 272,617.91, 376,397.90 and 170,684.57 is: 235,660.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,617.91 : 376,397.90 = 170,684.57 : x
  2. Step 2: Convert to fraction form
    272,617.91/376,397.90 = 170,684.57/x
  3. Step 3: Cross multiply
    272,617.91x = 376,397.90 × 170,684.57
  4. Step 4: Simplify right side
    272,617.91x = 64,245,313,797.97
  5. Step 5: Solve for x
    x = 64,245,313,797.97/272,617.91
  6. Step 6: Final answer
    x = 235,660.65

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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.