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Finding the Fourth Proportional to 323,968.43, 486,045.92 and 99,361.81

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Solution

The fourth proportional to 323,968.43, 486,045.92 and 99,361.81 is: 149,071.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,968.43 : 486,045.92 = 99,361.81 : x
  2. Step 2: Convert to fraction form
    323,968.43/486,045.92 = 99,361.81/x
  3. Step 3: Cross multiply
    323,968.43x = 486,045.92 × 99,361.81
  4. Step 4: Simplify right side
    323,968.43x = 48,294,399,917.36
  5. Step 5: Solve for x
    x = 48,294,399,917.36/323,968.43
  6. Step 6: Final answer
    x = 149,071.32

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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.