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Finding the Fourth Proportional to 248,661.01, 343,147.54 and 138,286.42

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Solution

The fourth proportional to 248,661.01, 343,147.54 and 138,286.42 is: 190,832.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,661.01 : 343,147.54 = 138,286.42 : x
  2. Step 2: Convert to fraction form
    248,661.01/343,147.54 = 138,286.42/x
  3. Step 3: Cross multiply
    248,661.01x = 343,147.54 × 138,286.42
  4. Step 4: Simplify right side
    248,661.01x = 47,452,644,838.41
  5. Step 5: Solve for x
    x = 47,452,644,838.41/248,661.01
  6. Step 6: Final answer
    x = 190,832.67

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1.5x scale

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.