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Finding the Fourth Proportional to 323,971.80, 485,601.30 and 113,501.40

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Solution

The fourth proportional to 323,971.80, 485,601.30 and 113,501.40 is: 170,127.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,971.80 : 485,601.30 = 113,501.40 : x
  2. Step 2: Convert to fraction form
    323,971.80/485,601.30 = 113,501.40/x
  3. Step 3: Cross multiply
    323,971.80x = 485,601.30 × 113,501.40
  4. Step 4: Simplify right side
    323,971.80x = 55,116,427,391.82
  5. Step 5: Solve for x
    x = 55,116,427,391.82/323,971.80
  6. Step 6: Final answer
    x = 170,127.24

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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.