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Finding the Fourth Proportional to 352,759.05, 486,884.52 and 216,909.90

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Solution

The fourth proportional to 352,759.05, 486,884.52 and 216,909.90 is: 299,383.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,759.05 : 486,884.52 = 216,909.90 : x
  2. Step 2: Convert to fraction form
    352,759.05/486,884.52 = 216,909.90/x
  3. Step 3: Cross multiply
    352,759.05x = 486,884.52 × 216,909.90
  4. Step 4: Simplify right side
    352,759.05x = 105,610,072,544.75
  5. Step 5: Solve for x
    x = 105,610,072,544.75/352,759.05
  6. Step 6: Final answer
    x = 299,383.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.