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Finding the Fourth Proportional to 308,170.64, 425,273.41 and 172,204.93

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Solution

The fourth proportional to 308,170.64, 425,273.41 and 172,204.93 is: 237,641.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,170.64 : 425,273.41 = 172,204.93 : x
  2. Step 2: Convert to fraction form
    308,170.64/425,273.41 = 172,204.93/x
  3. Step 3: Cross multiply
    308,170.64x = 425,273.41 × 172,204.93
  4. Step 4: Simplify right side
    308,170.64x = 73,234,176,306.22
  5. Step 5: Solve for x
    x = 73,234,176,306.22/308,170.64
  6. Step 6: Final answer
    x = 237,641.64

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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.