Home / 308,221.20-425,336.80-172,255.72

Finding the Fourth Proportional to 308,221.20, 425,336.80 and 172,255.72

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Solution

The fourth proportional to 308,221.20, 425,336.80 and 172,255.72 is: 237,708.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,221.20 : 425,336.80 = 172,255.72 : x
  2. Step 2: Convert to fraction form
    308,221.20/425,336.80 = 172,255.72/x
  3. Step 3: Cross multiply
    308,221.20x = 425,336.80 × 172,255.72
  4. Step 4: Simplify right side
    308,221.20x = 73,266,696,726.50
  5. Step 5: Solve for x
    x = 73,266,696,726.50/308,221.20
  6. Step 6: Final answer
    x = 237,708.17

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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.