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Finding the Fourth Proportional to 269,511.60, 404,008.20 and 209,506.80

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Solution

The fourth proportional to 269,511.60, 404,008.20 and 209,506.80 is: 314,058.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,511.60 : 404,008.20 = 209,506.80 : x
  2. Step 2: Convert to fraction form
    269,511.60/404,008.20 = 209,506.80/x
  3. Step 3: Cross multiply
    269,511.60x = 404,008.20 × 209,506.80
  4. Step 4: Simplify right side
    269,511.60x = 84,642,465,155.76
  5. Step 5: Solve for x
    x = 84,642,465,155.76/269,511.60
  6. Step 6: Final answer
    x = 314,058.71

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1.5x scale

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.