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Finding the Fourth Proportional to 378,087.93, 521,760.36 and 208,322.04

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Solution

The fourth proportional to 378,087.93, 521,760.36 and 208,322.04 is: 287,483.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,087.93 : 521,760.36 = 208,322.04 : x
  2. Step 2: Convert to fraction form
    378,087.93/521,760.36 = 208,322.04/x
  3. Step 3: Cross multiply
    378,087.93x = 521,760.36 × 208,322.04
  4. Step 4: Simplify right side
    378,087.93x = 108,694,182,586.33
  5. Step 5: Solve for x
    x = 108,694,182,586.33/378,087.93
  6. Step 6: Final answer
    x = 287,483.87

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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.