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Finding the Fourth Proportional to 239,162, 330,043.56 and 138,618.32

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Solution

The fourth proportional to 239,162, 330,043.56 and 138,618.32 is: 191,293.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,162 : 330,043.56 = 138,618.32 : x
  2. Step 2: Convert to fraction form
    239,162/330,043.56 = 138,618.32/x
  3. Step 3: Cross multiply
    239,162x = 330,043.56 × 138,618.32
  4. Step 4: Simplify right side
    239,162x = 45,750,083,814.02
  5. Step 5: Solve for x
    x = 45,750,083,814.02/239,162
  6. Step 6: Final answer
    x = 191,293.28

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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.