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Finding the Fourth Proportional to 665,897.46, 998,855.42 and 216,620.69

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Solution

The fourth proportional to 665,897.46, 998,855.42 and 216,620.69 is: 324,934.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,897.46 : 998,855.42 = 216,620.69 : x
  2. Step 2: Convert to fraction form
    665,897.46/998,855.42 = 216,620.69/x
  3. Step 3: Cross multiply
    665,897.46x = 998,855.42 × 216,620.69
  4. Step 4: Simplify right side
    665,897.46x = 216,372,744,213.26
  5. Step 5: Solve for x
    x = 216,372,744,213.26/665,897.46
  6. Step 6: Final answer
    x = 324,934.03

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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.