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Finding the Fourth Proportional to 495,857.08, 743,799.66 and 121,879

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Solution

The fourth proportional to 495,857.08, 743,799.66 and 121,879 is: 182,821.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,857.08 : 743,799.66 = 121,879 : x
  2. Step 2: Convert to fraction form
    495,857.08/743,799.66 = 121,879/x
  3. Step 3: Cross multiply
    495,857.08x = 743,799.66 × 121,879
  4. Step 4: Simplify right side
    495,857.08x = 90,653,558,761.14
  5. Step 5: Solve for x
    x = 90,653,558,761.14/495,857.08
  6. Step 6: Final answer
    x = 182,821.95

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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.