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Finding the Fourth Proportional to 202,309.70, 303,464.55 and 139,324.10

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Solution

The fourth proportional to 202,309.70, 303,464.55 and 139,324.10 is: 208,986.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,309.70 : 303,464.55 = 139,324.10 : x
  2. Step 2: Convert to fraction form
    202,309.70/303,464.55 = 139,324.10/x
  3. Step 3: Cross multiply
    202,309.70x = 303,464.55 × 139,324.10
  4. Step 4: Simplify right side
    202,309.70x = 42,279,925,310.66
  5. Step 5: Solve for x
    x = 42,279,925,310.66/202,309.70
  6. Step 6: Final answer
    x = 208,986.15

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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.