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Finding the Fourth Proportional to 201,700.70, 302,615.85 and 135,215.90

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Solution

The fourth proportional to 201,700.70, 302,615.85 and 135,215.90 is: 202,867.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,700.70 : 302,615.85 = 135,215.90 : x
  2. Step 2: Convert to fraction form
    201,700.70/302,615.85 = 135,215.90/x
  3. Step 3: Cross multiply
    201,700.70x = 302,615.85 × 135,215.90
  4. Step 4: Simplify right side
    201,700.70x = 40,918,474,512.02
  5. Step 5: Solve for x
    x = 40,918,474,512.02/201,700.70
  6. Step 6: Final answer
    x = 202,867.29

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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.