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Finding the Fourth Proportional to 336,996.91, 505,354.81 and 137,181.66

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Solution

The fourth proportional to 336,996.91, 505,354.81 and 137,181.66 is: 205,715.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,996.91 : 505,354.81 = 137,181.66 : x
  2. Step 2: Convert to fraction form
    336,996.91/505,354.81 = 137,181.66/x
  3. Step 3: Cross multiply
    336,996.91x = 505,354.81 × 137,181.66
  4. Step 4: Simplify right side
    336,996.91x = 69,325,411,724.78
  5. Step 5: Solve for x
    x = 69,325,411,724.78/336,996.91
  6. Step 6: Final answer
    x = 205,715.27

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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.