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Finding the Fourth Proportional to 202,063.91, 278,842.82 and 111,418.32

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Solution

The fourth proportional to 202,063.91, 278,842.82 and 111,418.32 is: 153,754.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,063.91 : 278,842.82 = 111,418.32 : x
  2. Step 2: Convert to fraction form
    202,063.91/278,842.82 = 111,418.32/x
  3. Step 3: Cross multiply
    202,063.91x = 278,842.82 × 111,418.32
  4. Step 4: Simplify right side
    202,063.91x = 31,068,197,991.37
  5. Step 5: Solve for x
    x = 31,068,197,991.37/202,063.91
  6. Step 6: Final answer
    x = 153,754.32

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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.