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Finding the Fourth Proportional to 248,919.78, 373,370.06 and 71,426.78

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Solution

The fourth proportional to 248,919.78, 373,370.06 and 71,426.78 is: 107,137.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,919.78 : 373,370.06 = 71,426.78 : x
  2. Step 2: Convert to fraction form
    248,919.78/373,370.06 = 71,426.78/x
  3. Step 3: Cross multiply
    248,919.78x = 373,370.06 × 71,426.78
  4. Step 4: Simplify right side
    248,919.78x = 26,668,620,444.29
  5. Step 5: Solve for x
    x = 26,668,620,444.29/248,919.78
  6. Step 6: Final answer
    x = 107,137.41

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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.