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Finding the Fourth Proportional to 311,423.90, 429,764.97 and 168,183.94

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Solution

The fourth proportional to 311,423.90, 429,764.97 and 168,183.94 is: 232,093.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,423.90 : 429,764.97 = 168,183.94 : x
  2. Step 2: Convert to fraction form
    311,423.90/429,764.97 = 168,183.94/x
  3. Step 3: Cross multiply
    311,423.90x = 429,764.97 × 168,183.94
  4. Step 4: Simplify right side
    311,423.90x = 72,279,565,928.58
  5. Step 5: Solve for x
    x = 72,279,565,928.58/311,423.90
  6. Step 6: Final answer
    x = 232,093.83

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1.5x scale

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.