Home / 215,933.88-323,948.21-66,185.45

Finding the Fourth Proportional to 215,933.88, 323,948.21 and 66,185.45

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Solution

The fourth proportional to 215,933.88, 323,948.21 and 66,185.45 is: 99,292.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,933.88 : 323,948.21 = 66,185.45 : x
  2. Step 2: Convert to fraction form
    215,933.88/323,948.21 = 66,185.45/x
  3. Step 3: Cross multiply
    215,933.88x = 323,948.21 × 66,185.45
  4. Step 4: Simplify right side
    215,933.88x = 21,440,656,104.88
  5. Step 5: Solve for x
    x = 21,440,656,104.88/215,933.88
  6. Step 6: Final answer
    x = 99,292.69

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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.