Home / 378,085.12-521,759.28-208,318.84

Finding the Fourth Proportional to 378,085.12, 521,759.28 and 208,318.84

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Solution

The fourth proportional to 378,085.12, 521,759.28 and 208,318.84 is: 287,481.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,085.12 : 521,759.28 = 208,318.84 : x
  2. Step 2: Convert to fraction form
    378,085.12/521,759.28 = 208,318.84/x
  3. Step 3: Cross multiply
    378,085.12x = 521,759.28 × 208,318.84
  4. Step 4: Simplify right side
    378,085.12x = 108,692,287,968.84
  5. Step 5: Solve for x
    x = 108,692,287,968.84/378,085.12
  6. Step 6: Final answer
    x = 287,481.00

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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.