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Finding the Fourth Proportional to 395,191.95, 545,358.87 and 220,764.44

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Solution

The fourth proportional to 395,191.95, 545,358.87 and 220,764.44 is: 304,651.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,191.95 : 545,358.87 = 220,764.44 : x
  2. Step 2: Convert to fraction form
    395,191.95/545,358.87 = 220,764.44/x
  3. Step 3: Cross multiply
    395,191.95x = 545,358.87 × 220,764.44
  4. Step 4: Simplify right side
    395,191.95x = 120,395,842,807.79
  5. Step 5: Solve for x
    x = 120,395,842,807.79/395,191.95
  6. Step 6: Final answer
    x = 304,651.56

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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.