Home / 213,205.28-319,458-72,887.36

Finding the Fourth Proportional to 213,205.28, 319,458 and 72,887.36

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Solution

The fourth proportional to 213,205.28, 319,458 and 72,887.36 is: 109,211.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,205.28 : 319,458 = 72,887.36 : x
  2. Step 2: Convert to fraction form
    213,205.28/319,458 = 72,887.36/x
  3. Step 3: Cross multiply
    213,205.28x = 319,458 × 72,887.36
  4. Step 4: Simplify right side
    213,205.28x = 23,284,450,250.88
  5. Step 5: Solve for x
    x = 23,284,450,250.88/213,205.28
  6. Step 6: Final answer
    x = 109,211.41

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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.