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Finding the Fourth Proportional to 323,474.40, 485,038.80 and 113,119.20

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Solution

The fourth proportional to 323,474.40, 485,038.80 and 113,119.20 is: 169,618.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,474.40 : 485,038.80 = 113,119.20 : x
  2. Step 2: Convert to fraction form
    323,474.40/485,038.80 = 113,119.20/x
  3. Step 3: Cross multiply
    323,474.40x = 485,038.80 × 113,119.20
  4. Step 4: Simplify right side
    323,474.40x = 54,867,201,024.96
  5. Step 5: Solve for x
    x = 54,867,201,024.96/323,474.40
  6. Step 6: Final answer
    x = 169,618.37

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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.