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Finding the Fourth Proportional to 312,573.33, 431,350.77 and 169,333.95

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Solution

The fourth proportional to 312,573.33, 431,350.77 and 169,333.95 is: 233,680.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,573.33 : 431,350.77 = 169,333.95 : x
  2. Step 2: Convert to fraction form
    312,573.33/431,350.77 = 169,333.95/x
  3. Step 3: Cross multiply
    312,573.33x = 431,350.77 × 169,333.95
  4. Step 4: Simplify right side
    312,573.33x = 73,042,329,719.64
  5. Step 5: Solve for x
    x = 73,042,329,719.64/312,573.33
  6. Step 6: Final answer
    x = 233,680.62

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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.