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Finding the Fourth Proportional to 248,195.20, 372,292.80 and 206,860.90

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Solution

The fourth proportional to 248,195.20, 372,292.80 and 206,860.90 is: 310,291.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,195.20 : 372,292.80 = 206,860.90 : x
  2. Step 2: Convert to fraction form
    248,195.20/372,292.80 = 206,860.90/x
  3. Step 3: Cross multiply
    248,195.20x = 372,292.80 × 206,860.90
  4. Step 4: Simplify right side
    248,195.20x = 77,012,823,671.52
  5. Step 5: Solve for x
    x = 77,012,823,671.52/248,195.20
  6. Step 6: Final answer
    x = 310,291.35

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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.