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Finding the Fourth Proportional to 215,788.88, 323,682.84 and 75,587.60

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Solution

The fourth proportional to 215,788.88, 323,682.84 and 75,587.60 is: 113,381.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,788.88 : 323,682.84 = 75,587.60 : x
  2. Step 2: Convert to fraction form
    215,788.88/323,682.84 = 75,587.60/x
  3. Step 3: Cross multiply
    215,788.88x = 323,682.84 × 75,587.60
  4. Step 4: Simplify right side
    215,788.88x = 24,466,409,036.78
  5. Step 5: Solve for x
    x = 24,466,409,036.78/215,788.88
  6. Step 6: Final answer
    x = 113,381.23

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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.