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Finding the Fourth Proportional to 663,311.10, 995,161.86 and 214,023.54

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Solution

The fourth proportional to 663,311.10, 995,161.86 and 214,023.54 is: 321,098.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,311.10 : 995,161.86 = 214,023.54 : x
  2. Step 2: Convert to fraction form
    663,311.10/995,161.86 = 214,023.54/x
  3. Step 3: Cross multiply
    663,311.10x = 995,161.86 × 214,023.54
  4. Step 4: Simplify right side
    663,311.10x = 212,988,064,150.18
  5. Step 5: Solve for x
    x = 212,988,064,150.18/663,311.10
  6. Step 6: Final answer
    x = 321,098.30

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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.