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Finding the Fourth Proportional to 269,813.80, 404,720.70 and 137,103.40

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Solution

The fourth proportional to 269,813.80, 404,720.70 and 137,103.40 is: 205,655.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,813.80 : 404,720.70 = 137,103.40 : x
  2. Step 2: Convert to fraction form
    269,813.80/404,720.70 = 137,103.40/x
  3. Step 3: Cross multiply
    269,813.80x = 404,720.70 × 137,103.40
  4. Step 4: Simplify right side
    269,813.80x = 55,488,584,020.38
  5. Step 5: Solve for x
    x = 55,488,584,020.38/269,813.80
  6. Step 6: Final answer
    x = 205,655.10

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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.