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Finding the Fourth Proportional to 308,559.11, 425,850.97 and 172,600.61

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Solution

The fourth proportional to 308,559.11, 425,850.97 and 172,600.61 is: 238,210.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,559.11 : 425,850.97 = 172,600.61 : x
  2. Step 2: Convert to fraction form
    308,559.11/425,850.97 = 172,600.61/x
  3. Step 3: Cross multiply
    308,559.11x = 425,850.97 × 172,600.61
  4. Step 4: Simplify right side
    308,559.11x = 73,502,137,392.72
  5. Step 5: Solve for x
    x = 73,502,137,392.72/308,559.11
  6. Step 6: Final answer
    x = 238,210.88

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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.