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Finding the Fourth Proportional to 308,698.70, 425,869.04 and 181,316.88

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Solution

The fourth proportional to 308,698.70, 425,869.04 and 181,316.88 is: 250,137.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,698.70 : 425,869.04 = 181,316.88 : x
  2. Step 2: Convert to fraction form
    308,698.70/425,869.04 = 181,316.88/x
  3. Step 3: Cross multiply
    308,698.70x = 425,869.04 × 181,316.88
  4. Step 4: Simplify right side
    308,698.70x = 77,217,246,074.69
  5. Step 5: Solve for x
    x = 77,217,246,074.69/308,698.70
  6. Step 6: Final answer
    x = 250,137.91

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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.