Home / 240,438.66-331,830-138,467.94

Finding the Fourth Proportional to 240,438.66, 331,830 and 138,467.94

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Solution

The fourth proportional to 240,438.66, 331,830 and 138,467.94 is: 191,099.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,438.66 : 331,830 = 138,467.94 : x
  2. Step 2: Convert to fraction form
    240,438.66/331,830 = 138,467.94/x
  3. Step 3: Cross multiply
    240,438.66x = 331,830 × 138,467.94
  4. Step 4: Simplify right side
    240,438.66x = 45,947,816,530.20
  5. Step 5: Solve for x
    x = 45,947,816,530.20/240,438.66
  6. Step 6: Final answer
    x = 191,099.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.