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Finding the Fourth Proportional to 248,889.72, 343,470.06 and 135,712.92

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Solution

The fourth proportional to 248,889.72, 343,470.06 and 135,712.92 is: 187,285.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,889.72 : 343,470.06 = 135,712.92 : x
  2. Step 2: Convert to fraction form
    248,889.72/343,470.06 = 135,712.92/x
  3. Step 3: Cross multiply
    248,889.72x = 343,470.06 × 135,712.92
  4. Step 4: Simplify right side
    248,889.72x = 46,613,324,775.18
  5. Step 5: Solve for x
    x = 46,613,324,775.18/248,889.72
  6. Step 6: Final answer
    x = 187,285.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.