Home / 213,508.38-320,299.42-87,217.22

Finding the Fourth Proportional to 213,508.38, 320,299.42 and 87,217.22

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Solution

The fourth proportional to 213,508.38, 320,299.42 and 87,217.22 is: 130,840.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,508.38 : 320,299.42 = 87,217.22 : x
  2. Step 2: Convert to fraction form
    213,508.38/320,299.42 = 87,217.22/x
  3. Step 3: Cross multiply
    213,508.38x = 320,299.42 × 87,217.22
  4. Step 4: Simplify right side
    213,508.38x = 27,935,624,980.01
  5. Step 5: Solve for x
    x = 27,935,624,980.01/213,508.38
  6. Step 6: Final answer
    x = 130,840.88

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1.5x scale

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.