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Finding the Fourth Proportional to 269,638.53, 404,400.38 and 80,047.50

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Solution

The fourth proportional to 269,638.53, 404,400.38 and 80,047.50 is: 120,054.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,638.53 : 404,400.38 = 80,047.50 : x
  2. Step 2: Convert to fraction form
    269,638.53/404,400.38 = 80,047.50/x
  3. Step 3: Cross multiply
    269,638.53x = 404,400.38 × 80,047.50
  4. Step 4: Simplify right side
    269,638.53x = 32,371,239,017.81
  5. Step 5: Solve for x
    x = 32,371,239,017.81/269,638.53
  6. Step 6: Final answer
    x = 120,054.20

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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.