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Finding the Fourth Proportional to 321,247.62, 481,830.57 and 84,608.82

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Solution

The fourth proportional to 321,247.62, 481,830.57 and 84,608.82 is: 126,902.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,247.62 : 481,830.57 = 84,608.82 : x
  2. Step 2: Convert to fraction form
    321,247.62/481,830.57 = 84,608.82/x
  3. Step 3: Cross multiply
    321,247.62x = 481,830.57 × 84,608.82
  4. Step 4: Simplify right side
    321,247.62x = 40,767,115,967.63
  5. Step 5: Solve for x
    x = 40,767,115,967.63/321,247.62
  6. Step 6: Final answer
    x = 126,902.47

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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.