Home / 213,506.37-320,296.41-87,215.22

Finding the Fourth Proportional to 213,506.37, 320,296.41 and 87,215.22

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Solution

The fourth proportional to 213,506.37, 320,296.41 and 87,215.22 is: 130,837.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,506.37 : 320,296.41 = 87,215.22 : x
  2. Step 2: Convert to fraction form
    213,506.37/320,296.41 = 87,215.22/x
  3. Step 3: Cross multiply
    213,506.37x = 320,296.41 × 87,215.22
  4. Step 4: Simplify right side
    213,506.37x = 27,934,721,863.36
  5. Step 5: Solve for x
    x = 27,934,721,863.36/213,506.37
  6. Step 6: Final answer
    x = 130,837.88

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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.