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Finding the Fourth Proportional to 387,696.60, 534,942.72 and 226,520.46

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Solution

The fourth proportional to 387,696.60, 534,942.72 and 226,520.46 is: 312,552.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,696.60 : 534,942.72 = 226,520.46 : x
  2. Step 2: Convert to fraction form
    387,696.60/534,942.72 = 226,520.46/x
  3. Step 3: Cross multiply
    387,696.60x = 534,942.72 × 226,520.46
  4. Step 4: Simplify right side
    387,696.60x = 121,175,471,008.05
  5. Step 5: Solve for x
    x = 121,175,471,008.05/387,696.60
  6. Step 6: Final answer
    x = 312,552.32

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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.