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Finding the Fourth Proportional to 308,479.10, 425,604.29 and 172,494.68

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Solution

The fourth proportional to 308,479.10, 425,604.29 and 172,494.68 is: 237,988.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,479.10 : 425,604.29 = 172,494.68 : x
  2. Step 2: Convert to fraction form
    308,479.10/425,604.29 = 172,494.68/x
  3. Step 3: Cross multiply
    308,479.10x = 425,604.29 × 172,494.68
  4. Step 4: Simplify right side
    308,479.10x = 73,414,472,819.68
  5. Step 5: Solve for x
    x = 73,414,472,819.68/308,479.10
  6. Step 6: Final answer
    x = 237,988.49

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1.5x scale

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.