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Finding the Fourth Proportional to 665,403.75, 998,391.65 and 216,262.35

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Solution

The fourth proportional to 665,403.75, 998,391.65 and 216,262.35 is: 324,486.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,403.75 : 998,391.65 = 216,262.35 : x
  2. Step 2: Convert to fraction form
    665,403.75/998,391.65 = 216,262.35/x
  3. Step 3: Cross multiply
    665,403.75x = 998,391.65 × 216,262.35
  4. Step 4: Simplify right side
    665,403.75x = 215,914,523,368.07
  5. Step 5: Solve for x
    x = 215,914,523,368.07/665,403.75
  6. Step 6: Final answer
    x = 324,486.48

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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.