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Finding the Fourth Proportional to 269,657.80, 404,745.90 and 136,688.20

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Solution

The fourth proportional to 269,657.80, 404,745.90 and 136,688.20 is: 205,163.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,657.80 : 404,745.90 = 136,688.20 : x
  2. Step 2: Convert to fraction form
    269,657.80/404,745.90 = 136,688.20/x
  3. Step 3: Cross multiply
    269,657.80x = 404,745.90 × 136,688.20
  4. Step 4: Simplify right side
    269,657.80x = 55,323,988,528.38
  5. Step 5: Solve for x
    x = 55,323,988,528.38/269,657.80
  6. Step 6: Final answer
    x = 205,163.69

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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.