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Finding the Fourth Proportional to 310,777.92, 428,809.32 and 181,691.52

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Solution

The fourth proportional to 310,777.92, 428,809.32 and 181,691.52 is: 250,696.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,777.92 : 428,809.32 = 181,691.52 : x
  2. Step 2: Convert to fraction form
    310,777.92/428,809.32 = 181,691.52/x
  3. Step 3: Cross multiply
    310,777.92x = 428,809.32 × 181,691.52
  4. Step 4: Simplify right side
    310,777.92x = 77,911,017,140.97
  5. Step 5: Solve for x
    x = 77,911,017,140.97/310,777.92
  6. Step 6: Final answer
    x = 250,696.76

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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.