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Finding the Fourth Proportional to 311,423.45, 429,764.37 and 168,183.53

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Solution

The fourth proportional to 311,423.45, 429,764.37 and 168,183.53 is: 232,093.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,423.45 : 429,764.37 = 168,183.53 : x
  2. Step 2: Convert to fraction form
    311,423.45/429,764.37 = 168,183.53/x
  3. Step 3: Cross multiply
    311,423.45x = 429,764.37 × 168,183.53
  4. Step 4: Simplify right side
    311,423.45x = 72,279,288,814.83
  5. Step 5: Solve for x
    x = 72,279,288,814.83/311,423.45
  6. Step 6: Final answer
    x = 232,093.28

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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.