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Finding the Fourth Proportional to 201,122.20, 301,853.40 and 82,878.40

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Solution

The fourth proportional to 201,122.20, 301,853.40 and 82,878.40 is: 124,387.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,122.20 : 301,853.40 = 82,878.40 : x
  2. Step 2: Convert to fraction form
    201,122.20/301,853.40 = 82,878.40/x
  3. Step 3: Cross multiply
    201,122.20x = 301,853.40 × 82,878.40
  4. Step 4: Simplify right side
    201,122.20x = 25,017,126,826.56
  5. Step 5: Solve for x
    x = 25,017,126,826.56/201,122.20
  6. Step 6: Final answer
    x = 124,387.69

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1.5x scale

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.