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Finding the Fourth Proportional to 355,702, 491,125.80 and 219,922.12

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Solution

The fourth proportional to 355,702, 491,125.80 and 219,922.12 is: 303,651.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,702 : 491,125.80 = 219,922.12 : x
  2. Step 2: Convert to fraction form
    355,702/491,125.80 = 219,922.12/x
  3. Step 3: Cross multiply
    355,702x = 491,125.80 × 219,922.12
  4. Step 4: Simplify right side
    355,702x = 108,009,427,122.70
  5. Step 5: Solve for x
    x = 108,009,427,122.70/355,702
  6. Step 6: Final answer
    x = 303,651.45

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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.