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Finding the Fourth Proportional to 395,375.87, 545,657.78 and 225,635.51

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Solution

The fourth proportional to 395,375.87, 545,657.78 and 225,635.51 is: 311,399.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,375.87 : 545,657.78 = 225,635.51 : x
  2. Step 2: Convert to fraction form
    395,375.87/545,657.78 = 225,635.51/x
  3. Step 3: Cross multiply
    395,375.87x = 545,657.78 × 225,635.51
  4. Step 4: Simplify right side
    395,375.87x = 123,119,771,475.77
  5. Step 5: Solve for x
    x = 123,119,771,475.77/395,375.87
  6. Step 6: Final answer
    x = 311,399.31

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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.