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Finding the Fourth Proportional to 395,600.16, 545,983.92 and 225,844.32

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Solution

The fourth proportional to 395,600.16, 545,983.92 and 225,844.32 is: 311,696.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,600.16 : 545,983.92 = 225,844.32 : x
  2. Step 2: Convert to fraction form
    395,600.16/545,983.92 = 225,844.32/x
  3. Step 3: Cross multiply
    395,600.16x = 545,983.92 × 225,844.32
  4. Step 4: Simplify right side
    395,600.16x = 123,307,367,143.33
  5. Step 5: Solve for x
    x = 123,307,367,143.33/395,600.16
  6. Step 6: Final answer
    x = 311,696.96

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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.