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Finding the Fourth Proportional to 202,376.60, 303,321.90 and 139,196.60

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Solution

The fourth proportional to 202,376.60, 303,321.90 and 139,196.60 is: 208,627.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,376.60 : 303,321.90 = 139,196.60 : x
  2. Step 2: Convert to fraction form
    202,376.60/303,321.90 = 139,196.60/x
  3. Step 3: Cross multiply
    202,376.60x = 303,321.90 × 139,196.60
  4. Step 4: Simplify right side
    202,376.60x = 42,221,377,185.54
  5. Step 5: Solve for x
    x = 42,221,377,185.54/202,376.60
  6. Step 6: Final answer
    x = 208,627.76

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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.