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Finding the Fourth Proportional to 336,910.40, 505,336.44 and 137,251.88

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Solution

The fourth proportional to 336,910.40, 505,336.44 and 137,251.88 is: 205,865.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,910.40 : 505,336.44 = 137,251.88 : x
  2. Step 2: Convert to fraction form
    336,910.40/505,336.44 = 137,251.88/x
  3. Step 3: Cross multiply
    336,910.40x = 505,336.44 × 137,251.88
  4. Step 4: Simplify right side
    336,910.40x = 69,358,376,422.51
  5. Step 5: Solve for x
    x = 69,358,376,422.51/336,910.40
  6. Step 6: Final answer
    x = 205,865.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.