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Finding the Fourth Proportional to 248,191.70, 372,287.55 and 206,857.40

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Solution

The fourth proportional to 248,191.70, 372,287.55 and 206,857.40 is: 310,286.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,191.70 : 372,287.55 = 206,857.40 : x
  2. Step 2: Convert to fraction form
    248,191.70/372,287.55 = 206,857.40/x
  3. Step 3: Cross multiply
    248,191.70x = 372,287.55 × 206,857.40
  4. Step 4: Simplify right side
    248,191.70x = 77,010,434,645.37
  5. Step 5: Solve for x
    x = 77,010,434,645.37/248,191.70
  6. Step 6: Final answer
    x = 310,286.10

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1.5x scale

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.