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Finding the Fourth Proportional to 269,287.80, 403,808.04 and 91,722.56

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Solution

The fourth proportional to 269,287.80, 403,808.04 and 91,722.56 is: 137,541.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,287.80 : 403,808.04 = 91,722.56 : x
  2. Step 2: Convert to fraction form
    269,287.80/403,808.04 = 91,722.56/x
  3. Step 3: Cross multiply
    269,287.80x = 403,808.04 × 91,722.56
  4. Step 4: Simplify right side
    269,287.80x = 37,038,307,177.38
  5. Step 5: Solve for x
    x = 37,038,307,177.38/269,287.80
  6. Step 6: Final answer
    x = 137,541.72

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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.