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Finding the Fourth Proportional to 269,568,141.80, 404,352,212.70 and 215,820,429.80

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Solution

The fourth proportional to 269,568,141.80, 404,352,212.70 and 215,820,429.80 is: 323,730,644.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,568,141.80 : 404,352,212.70 = 215,820,429.80 : x
  2. Step 2: Convert to fraction form
    269,568,141.80/404,352,212.70 = 215,820,429.80/x
  3. Step 3: Cross multiply
    269,568,141.80x = 404,352,212.70 × 215,820,429.80
  4. Step 4: Simplify right side
    269,568,141.80x = 87,267,468,335,495,024
  5. Step 5: Solve for x
    x = 87,267,468,335,495,024/269,568,141.80
  6. Step 6: Final answer
    x = 323,730,644.70

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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.