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Finding the Fourth Proportional to 311,887.50, 430,404.44 and 168,647.20

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Solution

The fourth proportional to 311,887.50, 430,404.44 and 168,647.20 is: 232,732.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,887.50 : 430,404.44 = 168,647.20 : x
  2. Step 2: Convert to fraction form
    311,887.50/430,404.44 = 168,647.20/x
  3. Step 3: Cross multiply
    311,887.50x = 430,404.44 × 168,647.20
  4. Step 4: Simplify right side
    311,887.50x = 72,586,503,673.57
  5. Step 5: Solve for x
    x = 72,586,503,673.57/311,887.50
  6. Step 6: Final answer
    x = 232,732.97

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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.