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Finding the Fourth Proportional to 312,599.47, 431,387.70 and 169,359.52

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Solution

The fourth proportional to 312,599.47, 431,387.70 and 169,359.52 is: 233,716.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,599.47 : 431,387.70 = 169,359.52 : x
  2. Step 2: Convert to fraction form
    312,599.47/431,387.70 = 169,359.52/x
  3. Step 3: Cross multiply
    312,599.47x = 431,387.70 × 169,359.52
  4. Step 4: Simplify right side
    312,599.47x = 73,059,614,884.37
  5. Step 5: Solve for x
    x = 73,059,614,884.37/312,599.47
  6. Step 6: Final answer
    x = 233,716.37

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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.