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Finding the Fourth Proportional to 202,270.05, 303,405.08 and 139,284.45

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Solution

The fourth proportional to 202,270.05, 303,405.08 and 139,284.45 is: 208,926.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,270.05 : 303,405.08 = 139,284.45 : x
  2. Step 2: Convert to fraction form
    202,270.05/303,405.08 = 139,284.45/x
  3. Step 3: Cross multiply
    202,270.05x = 303,405.08 × 139,284.45
  4. Step 4: Simplify right side
    202,270.05x = 42,259,608,998.58
  5. Step 5: Solve for x
    x = 42,259,608,998.58/202,270.05
  6. Step 6: Final answer
    x = 208,926.68

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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.