Home / 378,119.25-521,815.70-208,364.31

Finding the Fourth Proportional to 378,119.25, 521,815.70 and 208,364.31

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Solution

The fourth proportional to 378,119.25, 521,815.70 and 208,364.31 is: 287,548.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,119.25 : 521,815.70 = 208,364.31 : x
  2. Step 2: Convert to fraction form
    378,119.25/521,815.70 = 208,364.31/x
  3. Step 3: Cross multiply
    378,119.25x = 521,815.70 × 208,364.31
  4. Step 4: Simplify right side
    378,119.25x = 108,727,768,798.58
  5. Step 5: Solve for x
    x = 108,727,768,798.58/378,119.25
  6. Step 6: Final answer
    x = 287,548.89

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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.