Home / 338,488.12-507,109.39-212,104.81

Finding the Fourth Proportional to 338,488.12, 507,109.39 and 212,104.81

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Solution

The fourth proportional to 338,488.12, 507,109.39 and 212,104.81 is: 317,766.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,488.12 : 507,109.39 = 212,104.81 : x
  2. Step 2: Convert to fraction form
    338,488.12/507,109.39 = 212,104.81/x
  3. Step 3: Cross multiply
    338,488.12x = 507,109.39 × 212,104.81
  4. Step 4: Simplify right side
    338,488.12x = 107,560,342,111.88
  5. Step 5: Solve for x
    x = 107,560,342,111.88/338,488.12
  6. Step 6: Final answer
    x = 317,766.96

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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.