Home / 378,947.43-522,948.15-209,181.69

Finding the Fourth Proportional to 378,947.43, 522,948.15 and 209,181.69

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Solution

The fourth proportional to 378,947.43, 522,948.15 and 209,181.69 is: 288,671.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,947.43 : 522,948.15 = 209,181.69 : x
  2. Step 2: Convert to fraction form
    378,947.43/522,948.15 = 209,181.69/x
  3. Step 3: Cross multiply
    378,947.43x = 522,948.15 × 209,181.69
  4. Step 4: Simplify right side
    378,947.43x = 109,391,177,799.37
  5. Step 5: Solve for x
    x = 109,391,177,799.37/378,947.43
  6. Step 6: Final answer
    x = 288,671.12

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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.