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Finding the Fourth Proportional to 201,449.56, 302,181.06 and 61,207.72

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Solution

The fourth proportional to 201,449.56, 302,181.06 and 61,207.72 is: 91,813.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,449.56 : 302,181.06 = 61,207.72 : x
  2. Step 2: Convert to fraction form
    201,449.56/302,181.06 = 61,207.72/x
  3. Step 3: Cross multiply
    201,449.56x = 302,181.06 × 61,207.72
  4. Step 4: Simplify right side
    201,449.56x = 18,495,813,709.78
  5. Step 5: Solve for x
    x = 18,495,813,709.78/201,449.56
  6. Step 6: Final answer
    x = 91,813.62

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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.