Home / 378,947.24-522,950.84-209,177.72

Finding the Fourth Proportional to 378,947.24, 522,950.84 and 209,177.72

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Solution

The fourth proportional to 378,947.24, 522,950.84 and 209,177.72 is: 288,667.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,947.24 : 522,950.84 = 209,177.72 : x
  2. Step 2: Convert to fraction form
    378,947.24/522,950.84 = 209,177.72/x
  3. Step 3: Cross multiply
    378,947.24x = 522,950.84 × 209,177.72
  4. Step 4: Simplify right side
    378,947.24x = 109,389,664,383.29
  5. Step 5: Solve for x
    x = 109,389,664,383.29/378,947.24
  6. Step 6: Final answer
    x = 288,667.27

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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.