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Finding the Fourth Proportional to 239,286.66, 330,215.62 and 138,742.98

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Solution

The fourth proportional to 239,286.66, 330,215.62 and 138,742.98 is: 191,465.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,286.66 : 330,215.62 = 138,742.98 : x
  2. Step 2: Convert to fraction form
    239,286.66/330,215.62 = 138,742.98/x
  3. Step 3: Cross multiply
    239,286.66x = 330,215.62 × 138,742.98
  4. Step 4: Simplify right side
    239,286.66x = 45,815,099,161.35
  5. Step 5: Solve for x
    x = 45,815,099,161.35/239,286.66
  6. Step 6: Final answer
    x = 191,465.33

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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.