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Finding the Fourth Proportional to 310,696.92, 428,832.54 and 219,958.56

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Solution

The fourth proportional to 310,696.92, 428,832.54 and 219,958.56 is: 303,592.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,696.92 : 428,832.54 = 219,958.56 : x
  2. Step 2: Convert to fraction form
    310,696.92/428,832.54 = 219,958.56/x
  3. Step 3: Cross multiply
    310,696.92x = 428,832.54 × 219,958.56
  4. Step 4: Simplify right side
    310,696.92x = 94,325,387,979.54
  5. Step 5: Solve for x
    x = 94,325,387,979.54/310,696.92
  6. Step 6: Final answer
    x = 303,592.93

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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.