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Finding the Fourth Proportional to 202,400.61, 279,309.39 and 111,754.32

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Solution

The fourth proportional to 202,400.61, 279,309.39 and 111,754.32 is: 154,219.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,400.61 : 279,309.39 = 111,754.32 : x
  2. Step 2: Convert to fraction form
    202,400.61/279,309.39 = 111,754.32/x
  3. Step 3: Cross multiply
    202,400.61x = 279,309.39 × 111,754.32
  4. Step 4: Simplify right side
    202,400.61x = 31,214,030,949.06
  5. Step 5: Solve for x
    x = 31,214,030,949.06/202,400.61
  6. Step 6: Final answer
    x = 154,219.06

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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.