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Finding the Fourth Proportional to 308,551.80, 425,840.92 and 172,593.30

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Solution

The fourth proportional to 308,551.80, 425,840.92 and 172,593.30 is: 238,200.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,551.80 : 425,840.92 = 172,593.30 : x
  2. Step 2: Convert to fraction form
    308,551.80/425,840.92 = 172,593.30/x
  3. Step 3: Cross multiply
    308,551.80x = 425,840.92 × 172,593.30
  4. Step 4: Simplify right side
    308,551.80x = 73,497,289,657.84
  5. Step 5: Solve for x
    x = 73,497,289,657.84/308,551.80
  6. Step 6: Final answer
    x = 238,200.81

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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.