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Finding the Fourth Proportional to 248,660.01, 343,146.16 and 138,285.42

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Solution

The fourth proportional to 248,660.01, 343,146.16 and 138,285.42 is: 190,831.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,660.01 : 343,146.16 = 138,285.42 : x
  2. Step 2: Convert to fraction form
    248,660.01/343,146.16 = 138,285.42/x
  3. Step 3: Cross multiply
    248,660.01x = 343,146.16 × 138,285.42
  4. Step 4: Simplify right side
    248,660.01x = 47,452,110,511.27
  5. Step 5: Solve for x
    x = 47,452,110,511.27/248,660.01
  6. Step 6: Final answer
    x = 190,831.29

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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.