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Finding the Fourth Proportional to 269,268.70, 403,903.05 and 91,975.90

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Solution

The fourth proportional to 269,268.70, 403,903.05 and 91,975.90 is: 137,963.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,268.70 : 403,903.05 = 91,975.90 : x
  2. Step 2: Convert to fraction form
    269,268.70/403,903.05 = 91,975.90/x
  3. Step 3: Cross multiply
    269,268.70x = 403,903.05 × 91,975.90
  4. Step 4: Simplify right side
    269,268.70x = 37,149,346,536.50
  5. Step 5: Solve for x
    x = 37,149,346,536.50/269,268.70
  6. Step 6: Final answer
    x = 137,963.85

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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.