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Finding the Fourth Proportional to 201,372.10, 301,712.55 and 131,215.30

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Solution

The fourth proportional to 201,372.10, 301,712.55 and 131,215.30 is: 196,597.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,372.10 : 301,712.55 = 131,215.30 : x
  2. Step 2: Convert to fraction form
    201,372.10/301,712.55 = 131,215.30/x
  3. Step 3: Cross multiply
    201,372.10x = 301,712.55 × 131,215.30
  4. Step 4: Simplify right side
    201,372.10x = 39,589,302,762.02
  5. Step 5: Solve for x
    x = 39,589,302,762.02/201,372.10
  6. Step 6: Final answer
    x = 196,597.75

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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.