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Finding the Fourth Proportional to 323,995.76, 486,000.62 and 99,351.21

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Solution

The fourth proportional to 323,995.76, 486,000.62 and 99,351.21 is: 149,028.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,995.76 : 486,000.62 = 99,351.21 : x
  2. Step 2: Convert to fraction form
    323,995.76/486,000.62 = 99,351.21/x
  3. Step 3: Cross multiply
    323,995.76x = 486,000.62 × 99,351.21
  4. Step 4: Simplify right side
    323,995.76x = 48,284,749,657.75
  5. Step 5: Solve for x
    x = 48,284,749,657.75/323,995.76
  6. Step 6: Final answer
    x = 149,028.96

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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.