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Finding the Fourth Proportional to 378,240.32, 567,573.78 and 209,739.54

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Solution

The fourth proportional to 378,240.32, 567,573.78 and 209,739.54 is: 314,727.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,240.32 : 567,573.78 = 209,739.54 : x
  2. Step 2: Convert to fraction form
    378,240.32/567,573.78 = 209,739.54/x
  3. Step 3: Cross multiply
    378,240.32x = 567,573.78 × 209,739.54
  4. Step 4: Simplify right side
    378,240.32x = 119,042,663,533.26
  5. Step 5: Solve for x
    x = 119,042,663,533.26/378,240.32
  6. Step 6: Final answer
    x = 314,727.59

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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.