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Finding the Fourth Proportional to 253,899.90, 380,751.42 and 135,506.64

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Solution

The fourth proportional to 253,899.90, 380,751.42 and 135,506.64 is: 203,207.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,899.90 : 380,751.42 = 135,506.64 : x
  2. Step 2: Convert to fraction form
    253,899.90/380,751.42 = 135,506.64/x
  3. Step 3: Cross multiply
    253,899.90x = 380,751.42 × 135,506.64
  4. Step 4: Simplify right side
    253,899.90x = 51,594,345,599.43
  5. Step 5: Solve for x
    x = 51,594,345,599.43/253,899.90
  6. Step 6: Final answer
    x = 203,207.43

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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.