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Finding the Fourth Proportional to 201,742.30, 302,504.10 and 83,279.80

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Solution

The fourth proportional to 201,742.30, 302,504.10 and 83,279.80 is: 124,874.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,742.30 : 302,504.10 = 83,279.80 : x
  2. Step 2: Convert to fraction form
    201,742.30/302,504.10 = 83,279.80/x
  3. Step 3: Cross multiply
    201,742.30x = 302,504.10 × 83,279.80
  4. Step 4: Simplify right side
    201,742.30x = 25,192,480,947.18
  5. Step 5: Solve for x
    x = 25,192,480,947.18/201,742.30
  6. Step 6: Final answer
    x = 124,874.56

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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.