Home / 221,082.18-331,687.86-71,319.16

Finding the Fourth Proportional to 221,082.18, 331,687.86 and 71,319.16

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Solution

The fourth proportional to 221,082.18, 331,687.86 and 71,319.16 is: 106,999.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,082.18 : 331,687.86 = 71,319.16 : x
  2. Step 2: Convert to fraction form
    221,082.18/331,687.86 = 71,319.16/x
  3. Step 3: Cross multiply
    221,082.18x = 331,687.86 × 71,319.16
  4. Step 4: Simplify right side
    221,082.18x = 23,655,699,557.40
  5. Step 5: Solve for x
    x = 23,655,699,557.40/221,082.18
  6. Step 6: Final answer
    x = 106,999.58

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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.