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Finding the Fourth Proportional to 308,060.75, 425,119.15 and 172,096.65

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Solution

The fourth proportional to 308,060.75, 425,119.15 and 172,096.65 is: 237,490.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,060.75 : 425,119.15 = 172,096.65 : x
  2. Step 2: Convert to fraction form
    308,060.75/425,119.15 = 172,096.65/x
  3. Step 3: Cross multiply
    308,060.75x = 425,119.15 × 172,096.65
  4. Step 4: Simplify right side
    308,060.75x = 73,161,581,780.97
  5. Step 5: Solve for x
    x = 73,161,581,780.97/308,060.75
  6. Step 6: Final answer
    x = 237,490.76

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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.