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Finding the Fourth Proportional to 303,993.72, 456,082.86 and 215,418.60

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Solution

The fourth proportional to 303,993.72, 456,082.86 and 215,418.60 is: 323,193.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,993.72 : 456,082.86 = 215,418.60 : x
  2. Step 2: Convert to fraction form
    303,993.72/456,082.86 = 215,418.60/x
  3. Step 3: Cross multiply
    303,993.72x = 456,082.86 × 215,418.60
  4. Step 4: Simplify right side
    303,993.72x = 98,248,731,185.20
  5. Step 5: Solve for x
    x = 98,248,731,185.20/303,993.72
  6. Step 6: Final answer
    x = 323,193.29

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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.