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Finding the Fourth Proportional to 378,727.72, 522,833.64 and 235,533.89

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Solution

The fourth proportional to 378,727.72, 522,833.64 and 235,533.89 is: 325,154.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,727.72 : 522,833.64 = 235,533.89 : x
  2. Step 2: Convert to fraction form
    378,727.72/522,833.64 = 235,533.89/x
  3. Step 3: Cross multiply
    378,727.72x = 522,833.64 × 235,533.89
  4. Step 4: Simplify right side
    378,727.72x = 123,145,042,359.14
  5. Step 5: Solve for x
    x = 123,145,042,359.14/378,727.72
  6. Step 6: Final answer
    x = 325,154.55

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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.