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Finding the Fourth Proportional to 323,912.98, 485,869.47 and 166,040.74

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Solution

The fourth proportional to 323,912.98, 485,869.47 and 166,040.74 is: 249,061.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,912.98 : 485,869.47 = 166,040.74 : x
  2. Step 2: Convert to fraction form
    323,912.98/485,869.47 = 166,040.74/x
  3. Step 3: Cross multiply
    323,912.98x = 485,869.47 × 166,040.74
  4. Step 4: Simplify right side
    323,912.98x = 80,674,126,342.21
  5. Step 5: Solve for x
    x = 80,674,126,342.21/323,912.98
  6. Step 6: Final answer
    x = 249,061.11

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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.