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Finding the Fourth Proportional to 248,662.01, 343,148.92 and 138,287.42

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Solution

The fourth proportional to 248,662.01, 343,148.92 and 138,287.42 is: 190,834.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,662.01 : 343,148.92 = 138,287.42 : x
  2. Step 2: Convert to fraction form
    248,662.01/343,148.92 = 138,287.42/x
  3. Step 3: Cross multiply
    248,662.01x = 343,148.92 × 138,287.42
  4. Step 4: Simplify right side
    248,662.01x = 47,453,178,822.59
  5. Step 5: Solve for x
    x = 47,453,178,822.59/248,662.01
  6. Step 6: Final answer
    x = 190,834.05

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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.