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Finding the Fourth Proportional to 662,488.97, 993,733.79 and 213,209.78

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Solution

The fourth proportional to 662,488.97, 993,733.79 and 213,209.78 is: 319,814.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,488.97 : 993,733.79 = 213,209.78 : x
  2. Step 2: Convert to fraction form
    662,488.97/993,733.79 = 213,209.78/x
  3. Step 3: Cross multiply
    662,488.97x = 993,733.79 × 213,209.78
  4. Step 4: Simplify right side
    662,488.97x = 211,873,756,709.75
  5. Step 5: Solve for x
    x = 211,873,756,709.75/662,488.97
  6. Step 6: Final answer
    x = 319,814.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.