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Finding the Fourth Proportional to 248,424.12, 372,642.32 and 90,652.54

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Solution

The fourth proportional to 248,424.12, 372,642.32 and 90,652.54 is: 135,981.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,424.12 : 372,642.32 = 90,652.54 : x
  2. Step 2: Convert to fraction form
    248,424.12/372,642.32 = 90,652.54/x
  3. Step 3: Cross multiply
    248,424.12x = 372,642.32 × 90,652.54
  4. Step 4: Simplify right side
    248,424.12x = 33,780,972,819.49
  5. Step 5: Solve for x
    x = 33,780,972,819.49/248,424.12
  6. Step 6: Final answer
    x = 135,981.05

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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.