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Finding the Fourth Proportional to 248,891.72, 373,305.80 and 80,394.54

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Solution

The fourth proportional to 248,891.72, 373,305.80 and 80,394.54 is: 120,581.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,891.72 : 373,305.80 = 80,394.54 : x
  2. Step 2: Convert to fraction form
    248,891.72/373,305.80 = 80,394.54/x
  3. Step 3: Cross multiply
    248,891.72x = 373,305.80 × 80,394.54
  4. Step 4: Simplify right side
    248,891.72x = 30,011,748,070.33
  5. Step 5: Solve for x
    x = 30,011,748,070.33/248,891.72
  6. Step 6: Final answer
    x = 120,581.54

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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.