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Finding the Fourth Proportional to 202,378.26, 279,274.64 and 111,732.32

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Solution

The fourth proportional to 202,378.26, 279,274.64 and 111,732.32 is: 154,186.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,378.26 : 279,274.64 = 111,732.32 : x
  2. Step 2: Convert to fraction form
    202,378.26/279,274.64 = 111,732.32/x
  3. Step 3: Cross multiply
    202,378.26x = 279,274.64 × 111,732.32
  4. Step 4: Simplify right side
    202,378.26x = 31,204,003,444.36
  5. Step 5: Solve for x
    x = 31,204,003,444.36/202,378.26
  6. Step 6: Final answer
    x = 154,186.54

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1.5x scale

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.