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Finding the Fourth Proportional to 378,732.90, 522,840.78 and 235,539.08

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Solution

The fourth proportional to 378,732.90, 522,840.78 and 235,539.08 is: 325,161.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,732.90 : 522,840.78 = 235,539.08 : x
  2. Step 2: Convert to fraction form
    378,732.90/522,840.78 = 235,539.08/x
  3. Step 3: Cross multiply
    378,732.90x = 522,840.78 × 235,539.08
  4. Step 4: Simplify right side
    378,732.90x = 123,149,436,307.68
  5. Step 5: Solve for x
    x = 123,149,436,307.68/378,732.90
  6. Step 6: Final answer
    x = 325,161.71

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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.