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Finding the Fourth Proportional to 378,171.00, 521,901.79 and 231,058.84

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Solution

The fourth proportional to 378,171.00, 521,901.79 and 231,058.84 is: 318,876.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,171.00 : 521,901.79 = 231,058.84 : x
  2. Step 2: Convert to fraction form
    378,171.00/521,901.79 = 231,058.84/x
  3. Step 3: Cross multiply
    378,171.00x = 521,901.79 × 231,058.84
  4. Step 4: Simplify right side
    378,171.00x = 120,590,020,308.92
  5. Step 5: Solve for x
    x = 120,590,020,308.92/378,171.00
  6. Step 6: Final answer
    x = 318,876.97

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1.5x scale

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.