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Finding the Fourth Proportional to 665,897.18, 998,854.98 and 216,620.39

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Solution

The fourth proportional to 665,897.18, 998,854.98 and 216,620.39 is: 324,933.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,897.18 : 998,854.98 = 216,620.39 : x
  2. Step 2: Convert to fraction form
    665,897.18/998,854.98 = 216,620.39/x
  3. Step 3: Cross multiply
    665,897.18x = 998,854.98 × 216,620.39
  4. Step 4: Simplify right side
    665,897.18x = 216,372,354,237.94
  5. Step 5: Solve for x
    x = 216,372,354,237.94/665,897.18
  6. Step 6: Final answer
    x = 324,933.58

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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.