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Finding the Fourth Proportional to 248,278.56, 372,418.56 and 90,506.76

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Solution

The fourth proportional to 248,278.56, 372,418.56 and 90,506.76 is: 135,760.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,278.56 : 372,418.56 = 90,506.76 : x
  2. Step 2: Convert to fraction form
    248,278.56/372,418.56 = 90,506.76/x
  3. Step 3: Cross multiply
    248,278.56x = 372,418.56 × 90,506.76
  4. Step 4: Simplify right side
    248,278.56x = 33,706,397,229.47
  5. Step 5: Solve for x
    x = 33,706,397,229.47/248,278.56
  6. Step 6: Final answer
    x = 135,760.40

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1.5x scale

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.