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Finding the Fourth Proportional to 201,720.78, 302,628.56 and 113,035.50

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Solution

The fourth proportional to 201,720.78, 302,628.56 and 113,035.50 is: 169,579.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,720.78 : 302,628.56 = 113,035.50 : x
  2. Step 2: Convert to fraction form
    201,720.78/302,628.56 = 113,035.50/x
  3. Step 3: Cross multiply
    201,720.78x = 302,628.56 × 113,035.50
  4. Step 4: Simplify right side
    201,720.78x = 34,207,770,593.88
  5. Step 5: Solve for x
    x = 34,207,770,593.88/201,720.78
  6. Step 6: Final answer
    x = 169,579.81

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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.