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Finding the Fourth Proportional to 665,342.35, 996,865.35 and 309,626.80

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Solution

The fourth proportional to 665,342.35, 996,865.35 and 309,626.80 is: 463,905.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,342.35 : 996,865.35 = 309,626.80 : x
  2. Step 2: Convert to fraction form
    665,342.35/996,865.35 = 309,626.80/x
  3. Step 3: Cross multiply
    665,342.35x = 996,865.35 × 309,626.80
  4. Step 4: Simplify right side
    665,342.35x = 308,656,228,351.38
  5. Step 5: Solve for x
    x = 308,656,228,351.38/665,342.35
  6. Step 6: Final answer
    x = 463,905.88

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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.