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Finding the Fourth Proportional to 248,686.71, 372,808.47 and 115,494.36

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Solution

The fourth proportional to 248,686.71, 372,808.47 and 115,494.36 is: 173,138.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,686.71 : 372,808.47 = 115,494.36 : x
  2. Step 2: Convert to fraction form
    248,686.71/372,808.47 = 115,494.36/x
  3. Step 3: Cross multiply
    248,686.71x = 372,808.47 × 115,494.36
  4. Step 4: Simplify right side
    248,686.71x = 43,057,274,680.30
  5. Step 5: Solve for x
    x = 43,057,274,680.30/248,686.71
  6. Step 6: Final answer
    x = 173,138.63

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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.