Home / 221,082.30-331,688.05-71,319.29

Finding the Fourth Proportional to 221,082.30, 331,688.05 and 71,319.29

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Solution

The fourth proportional to 221,082.30, 331,688.05 and 71,319.29 is: 106,999.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,082.30 : 331,688.05 = 71,319.29 : x
  2. Step 2: Convert to fraction form
    221,082.30/331,688.05 = 71,319.29/x
  3. Step 3: Cross multiply
    221,082.30x = 331,688.05 × 71,319.29
  4. Step 4: Simplify right side
    221,082.30x = 23,655,754,390.75
  5. Step 5: Solve for x
    x = 23,655,754,390.75/221,082.30
  6. Step 6: Final answer
    x = 106,999.77

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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.