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Finding the Fourth Proportional to 306,763.92, 459,758.16 and 138,104.64

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Solution

The fourth proportional to 306,763.92, 459,758.16 and 138,104.64 is: 206,982.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,763.92 : 459,758.16 = 138,104.64 : x
  2. Step 2: Convert to fraction form
    306,763.92/459,758.16 = 138,104.64/x
  3. Step 3: Cross multiply
    306,763.92x = 459,758.16 × 138,104.64
  4. Step 4: Simplify right side
    306,763.92x = 63,494,735,173.86
  5. Step 5: Solve for x
    x = 63,494,735,173.86/306,763.92
  6. Step 6: Final answer
    x = 206,982.41

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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.