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Finding the Fourth Proportional to 336,992.71, 505,488.12 and 137,266.15

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Solution

The fourth proportional to 336,992.71, 505,488.12 and 137,266.15 is: 205,898.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,992.71 : 505,488.12 = 137,266.15 : x
  2. Step 2: Convert to fraction form
    336,992.71/505,488.12 = 137,266.15/x
  3. Step 3: Cross multiply
    336,992.71x = 505,488.12 × 137,266.15
  4. Step 4: Simplify right side
    336,992.71x = 69,386,408,103.14
  5. Step 5: Solve for x
    x = 69,386,408,103.14/336,992.71
  6. Step 6: Final answer
    x = 205,898.84

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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.