Home / 393,523.96-542,995.26-221,418.04

Finding the Fourth Proportional to 393,523.96, 542,995.26 and 221,418.04

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Solution

The fourth proportional to 393,523.96, 542,995.26 and 221,418.04 is: 305,518.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,523.96 : 542,995.26 = 221,418.04 : x
  2. Step 2: Convert to fraction form
    393,523.96/542,995.26 = 221,418.04/x
  3. Step 3: Cross multiply
    393,523.96x = 542,995.26 × 221,418.04
  4. Step 4: Simplify right side
    393,523.96x = 120,228,946,198.49
  5. Step 5: Solve for x
    x = 120,228,946,198.49/393,523.96
  6. Step 6: Final answer
    x = 305,518.74

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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.