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Finding the Fourth Proportional to 663,657.20, 995,631.60 and 214,301.60

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Solution

The fourth proportional to 663,657.20, 995,631.60 and 214,301.60 is: 321,499.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,657.20 : 995,631.60 = 214,301.60 : x
  2. Step 2: Convert to fraction form
    663,657.20/995,631.60 = 214,301.60/x
  3. Step 3: Cross multiply
    663,657.20x = 995,631.60 × 214,301.60
  4. Step 4: Simplify right side
    663,657.20x = 213,365,444,890.56
  5. Step 5: Solve for x
    x = 213,365,444,890.56/663,657.20
  6. Step 6: Final answer
    x = 321,499.48

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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.