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Finding the Fourth Proportional to 382,892.85, 528,383.39 and 239,731.83

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Solution

The fourth proportional to 382,892.85, 528,383.39 and 239,731.83 is: 330,824.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,892.85 : 528,383.39 = 239,731.83 : x
  2. Step 2: Convert to fraction form
    382,892.85/528,383.39 = 239,731.83/x
  3. Step 3: Cross multiply
    382,892.85x = 528,383.39 × 239,731.83
  4. Step 4: Simplify right side
    382,892.85x = 126,670,315,827.65
  5. Step 5: Solve for x
    x = 126,670,315,827.65/382,892.85
  6. Step 6: Final answer
    x = 330,824.45

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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.