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Finding the Fourth Proportional to 215,915.80, 323,863.44 and 75,663.76

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Solution

The fourth proportional to 215,915.80, 323,863.44 and 75,663.76 is: 113,492.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,915.80 : 323,863.44 = 75,663.76 : x
  2. Step 2: Convert to fraction form
    215,915.80/323,863.44 = 75,663.76/x
  3. Step 3: Cross multiply
    215,915.80x = 323,863.44 × 75,663.76
  4. Step 4: Simplify right side
    215,915.80x = 24,504,725,596.93
  5. Step 5: Solve for x
    x = 24,504,725,596.93/215,915.80
  6. Step 6: Final answer
    x = 113,492.04

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1.5x scale

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.