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Finding the Fourth Proportional to 395,110.92, 545,248.90 and 213,818.92

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Solution

The fourth proportional to 395,110.92, 545,248.90 and 213,818.92 is: 295,067.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,110.92 : 545,248.90 = 213,818.92 : x
  2. Step 2: Convert to fraction form
    395,110.92/545,248.90 = 213,818.92/x
  3. Step 3: Cross multiply
    395,110.92x = 545,248.90 × 213,818.92
  4. Step 4: Simplify right side
    395,110.92x = 116,584,530,929.19
  5. Step 5: Solve for x
    x = 116,584,530,929.19/395,110.92
  6. Step 6: Final answer
    x = 295,067.85

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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.