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Finding the Fourth Proportional to 248,658.71, 372,991.64 and 71,165.84

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Solution

The fourth proportional to 248,658.71, 372,991.64 and 71,165.84 is: 106,749.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,658.71 : 372,991.64 = 71,165.84 : x
  2. Step 2: Convert to fraction form
    248,658.71/372,991.64 = 71,165.84/x
  3. Step 3: Cross multiply
    248,658.71x = 372,991.64 × 71,165.84
  4. Step 4: Simplify right side
    248,658.71x = 26,544,261,152.79
  5. Step 5: Solve for x
    x = 26,544,261,152.79/248,658.71
  6. Step 6: Final answer
    x = 106,749.78

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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.