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Finding the Fourth Proportional to 311,467.62, 467,240.33 and 121,903.47

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Solution

The fourth proportional to 311,467.62, 467,240.33 and 121,903.47 is: 182,870.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,467.62 : 467,240.33 = 121,903.47 : x
  2. Step 2: Convert to fraction form
    311,467.62/467,240.33 = 121,903.47/x
  3. Step 3: Cross multiply
    311,467.62x = 467,240.33 × 121,903.47
  4. Step 4: Simplify right side
    311,467.62x = 56,958,216,941.43
  5. Step 5: Solve for x
    x = 56,958,216,941.43/311,467.62
  6. Step 6: Final answer
    x = 182,870.43

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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.