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Finding the Fourth Proportional to 291,220.55, 436,652.45 and 113,519.97

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Solution

The fourth proportional to 291,220.55, 436,652.45 and 113,519.97 is: 170,210.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,220.55 : 436,652.45 = 113,519.97 : x
  2. Step 2: Convert to fraction form
    291,220.55/436,652.45 = 113,519.97/x
  3. Step 3: Cross multiply
    291,220.55x = 436,652.45 × 113,519.97
  4. Step 4: Simplify right side
    291,220.55x = 49,568,773,024.43
  5. Step 5: Solve for x
    x = 49,568,773,024.43/291,220.55
  6. Step 6: Final answer
    x = 170,210.42

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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.