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Finding the Fourth Proportional to 311,524.17, 429,902.80 and 168,283.77

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Solution

The fourth proportional to 311,524.17, 429,902.80 and 168,283.77 is: 232,231.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,524.17 : 429,902.80 = 168,283.77 : x
  2. Step 2: Convert to fraction form
    311,524.17/429,902.80 = 168,283.77/x
  3. Step 3: Cross multiply
    311,524.17x = 429,902.80 × 168,283.77
  4. Step 4: Simplify right side
    311,524.17x = 72,345,663,917.56
  5. Step 5: Solve for x
    x = 72,345,663,917.56/311,524.17
  6. Step 6: Final answer
    x = 232,231.30

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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.