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Finding the Fourth Proportional to 308,700.70, 425,871.80 and 181,318.88

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Solution

The fourth proportional to 308,700.70, 425,871.80 and 181,318.88 is: 250,140.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,700.70 : 425,871.80 = 181,318.88 : x
  2. Step 2: Convert to fraction form
    308,700.70/425,871.80 = 181,318.88/x
  3. Step 3: Cross multiply
    308,700.70x = 425,871.80 × 181,318.88
  4. Step 4: Simplify right side
    308,700.70x = 77,218,597,799.58
  5. Step 5: Solve for x
    x = 77,218,597,799.58/308,700.70
  6. Step 6: Final answer
    x = 250,140.66

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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.