Home / 312,356.04-431,049.36-169,115.64

Finding the Fourth Proportional to 312,356.04, 431,049.36 and 169,115.64

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Solution

The fourth proportional to 312,356.04, 431,049.36 and 169,115.64 is: 233,378.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,356.04 : 431,049.36 = 169,115.64 : x
  2. Step 2: Convert to fraction form
    312,356.04/431,049.36 = 169,115.64/x
  3. Step 3: Cross multiply
    312,356.04x = 431,049.36 × 169,115.64
  4. Step 4: Simplify right side
    312,356.04x = 72,897,188,387.99
  5. Step 5: Solve for x
    x = 72,897,188,387.99/312,356.04
  6. Step 6: Final answer
    x = 233,378.51

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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.