Home / 312,461.28-431,194.14-169,218

Finding the Fourth Proportional to 312,461.28, 431,194.14 and 169,218

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Solution

The fourth proportional to 312,461.28, 431,194.14 and 169,218 is: 233,519.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,461.28 : 431,194.14 = 169,218 : x
  2. Step 2: Convert to fraction form
    312,461.28/431,194.14 = 169,218/x
  3. Step 3: Cross multiply
    312,461.28x = 431,194.14 × 169,218
  4. Step 4: Simplify right side
    312,461.28x = 72,965,809,982.52
  5. Step 5: Solve for x
    x = 72,965,809,982.52/312,461.28
  6. Step 6: Final answer
    x = 233,519.53

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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.