Home / 213,085.13-319,628.30-55,314.95

Finding the Fourth Proportional to 213,085.13, 319,628.30 and 55,314.95

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Solution

The fourth proportional to 213,085.13, 319,628.30 and 55,314.95 is: 82,972.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,085.13 : 319,628.30 = 55,314.95 : x
  2. Step 2: Convert to fraction form
    213,085.13/319,628.30 = 55,314.95/x
  3. Step 3: Cross multiply
    213,085.13x = 319,628.30 × 55,314.95
  4. Step 4: Simplify right side
    213,085.13x = 17,680,221,558.37
  5. Step 5: Solve for x
    x = 17,680,221,558.37/213,085.13
  6. Step 6: Final answer
    x = 82,972.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.