Home / 378,132.90-521,834.52-208,377.96

Finding the Fourth Proportional to 378,132.90, 521,834.52 and 208,377.96

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Solution

The fourth proportional to 378,132.90, 521,834.52 and 208,377.96 is: 287,567.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,132.90 : 521,834.52 = 208,377.96 : x
  2. Step 2: Convert to fraction form
    378,132.90/521,834.52 = 208,377.96/x
  3. Step 3: Cross multiply
    378,132.90x = 521,834.52 × 208,377.96
  4. Step 4: Simplify right side
    378,132.90x = 108,738,812,735.18
  5. Step 5: Solve for x
    x = 108,738,812,735.18/378,132.90
  6. Step 6: Final answer
    x = 287,567.71

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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.