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Finding the Fourth Proportional to 248,471.40, 372,707.10 and 221,514.60

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Solution

The fourth proportional to 248,471.40, 372,707.10 and 221,514.60 is: 332,271.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,471.40 : 372,707.10 = 221,514.60 : x
  2. Step 2: Convert to fraction form
    248,471.40/372,707.10 = 221,514.60/x
  3. Step 3: Cross multiply
    248,471.40x = 372,707.10 × 221,514.60
  4. Step 4: Simplify right side
    248,471.40x = 82,560,064,173.66
  5. Step 5: Solve for x
    x = 82,560,064,173.66/248,471.40
  6. Step 6: Final answer
    x = 332,271.90

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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.