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Finding the Fourth Proportional to 308,508, 425,723.28 and 170,678.64

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Solution

The fourth proportional to 308,508, 425,723.28 and 170,678.64 is: 235,526.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,508 : 425,723.28 = 170,678.64 : x
  2. Step 2: Convert to fraction form
    308,508/425,723.28 = 170,678.64/x
  3. Step 3: Cross multiply
    308,508x = 425,723.28 × 170,678.64
  4. Step 4: Simplify right side
    308,508x = 72,661,870,446.74
  5. Step 5: Solve for x
    x = 72,661,870,446.74/308,508
  6. Step 6: Final answer
    x = 235,526.70

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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.