Home / 213,583.80-320,375.70-135,046.20

Finding the Fourth Proportional to 213,583.80, 320,375.70 and 135,046.20

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Solution

The fourth proportional to 213,583.80, 320,375.70 and 135,046.20 is: 202,569.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,583.80 : 320,375.70 = 135,046.20 : x
  2. Step 2: Convert to fraction form
    213,583.80/320,375.70 = 135,046.20/x
  3. Step 3: Cross multiply
    213,583.80x = 320,375.70 × 135,046.20
  4. Step 4: Simplify right side
    213,583.80x = 43,265,520,857.34
  5. Step 5: Solve for x
    x = 43,265,520,857.34/213,583.80
  6. Step 6: Final answer
    x = 202,569.30

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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.