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Finding the Fourth Proportional to 336,980.22, 505,460.60 and 137,251.22

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Solution

The fourth proportional to 336,980.22, 505,460.60 and 137,251.22 is: 205,872.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,980.22 : 505,460.60 = 137,251.22 : x
  2. Step 2: Convert to fraction form
    336,980.22/505,460.60 = 137,251.22/x
  3. Step 3: Cross multiply
    336,980.22x = 505,460.60 × 137,251.22
  4. Step 4: Simplify right side
    336,980.22x = 69,375,084,011.93
  5. Step 5: Solve for x
    x = 69,375,084,011.93/336,980.22
  6. Step 6: Final answer
    x = 205,872.87

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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.