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Finding the Fourth Proportional to 395,595.12, 545,960.34 and 225,854.76

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Solution

The fourth proportional to 395,595.12, 545,960.34 and 225,854.76 is: 311,701.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,595.12 : 545,960.34 = 225,854.76 : x
  2. Step 2: Convert to fraction form
    395,595.12/545,960.34 = 225,854.76/x
  3. Step 3: Cross multiply
    395,595.12x = 545,960.34 × 225,854.76
  4. Step 4: Simplify right side
    395,595.12x = 123,307,741,560.22
  5. Step 5: Solve for x
    x = 123,307,741,560.22/395,595.12
  6. Step 6: Final answer
    x = 311,701.88

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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.