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Finding the Fourth Proportional to 493,302.24, 680,760.24 and 289,311.72

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Solution

The fourth proportional to 493,302.24, 680,760.24 and 289,311.72 is: 399,252.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,302.24 : 680,760.24 = 289,311.72 : x
  2. Step 2: Convert to fraction form
    493,302.24/680,760.24 = 289,311.72/x
  3. Step 3: Cross multiply
    493,302.24x = 680,760.24 × 289,311.72
  4. Step 4: Simplify right side
    493,302.24x = 196,951,915,942.01
  5. Step 5: Solve for x
    x = 196,951,915,942.01/493,302.24
  6. Step 6: Final answer
    x = 399,252.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.