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Finding the Fourth Proportional to 382,765.39, 528,208.39 and 239,604.37

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Solution

The fourth proportional to 382,765.39, 528,208.39 and 239,604.37 is: 330,649.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,765.39 : 528,208.39 = 239,604.37 : x
  2. Step 2: Convert to fraction form
    382,765.39/528,208.39 = 239,604.37/x
  3. Step 3: Cross multiply
    382,765.39x = 528,208.39 × 239,604.37
  4. Step 4: Simplify right side
    382,765.39x = 126,561,037,493.65
  5. Step 5: Solve for x
    x = 126,561,037,493.65/382,765.39
  6. Step 6: Final answer
    x = 330,649.12

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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.