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Finding the Fourth Proportional to 269,528.70, 404,329.05 and 91,991.10

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Solution

The fourth proportional to 269,528.70, 404,329.05 and 91,991.10 is: 137,998.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,528.70 : 404,329.05 = 91,991.10 : x
  2. Step 2: Convert to fraction form
    269,528.70/404,329.05 = 91,991.10/x
  3. Step 3: Cross multiply
    269,528.70x = 404,329.05 × 91,991.10
  4. Step 4: Simplify right side
    269,528.70x = 37,194,674,071.46
  5. Step 5: Solve for x
    x = 37,194,674,071.46/269,528.70
  6. Step 6: Final answer
    x = 137,998.94

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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.