Home / 378,256.66-521,987.97-208,506.58

Finding the Fourth Proportional to 378,256.66, 521,987.97 and 208,506.58

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Solution

The fourth proportional to 378,256.66, 521,987.97 and 208,506.58 is: 287,735.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,256.66 : 521,987.97 = 208,506.58 : x
  2. Step 2: Convert to fraction form
    378,256.66/521,987.97 = 208,506.58/x
  3. Step 3: Cross multiply
    378,256.66x = 521,987.97 × 208,506.58
  4. Step 4: Simplify right side
    378,256.66x = 108,837,926,425.84
  5. Step 5: Solve for x
    x = 108,837,926,425.84/378,256.66
  6. Step 6: Final answer
    x = 287,735.65

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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.