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Finding the Fourth Proportional to 663,604.40, 995,163.60 and 214,443.20

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Solution

The fourth proportional to 663,604.40, 995,163.60 and 214,443.20 is: 321,586.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,604.40 : 995,163.60 = 214,443.20 : x
  2. Step 2: Convert to fraction form
    663,604.40/995,163.60 = 214,443.20/x
  3. Step 3: Cross multiply
    663,604.40x = 995,163.60 × 214,443.20
  4. Step 4: Simplify right side
    663,604.40x = 213,406,066,907.52
  5. Step 5: Solve for x
    x = 213,406,066,907.52/663,604.40
  6. Step 6: Final answer
    x = 321,586.27

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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.