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Finding the Fourth Proportional to 215,940.80, 323,765.40 and 110,673.20

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Solution

The fourth proportional to 215,940.80, 323,765.40 and 110,673.20 is: 165,935.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,940.80 : 323,765.40 = 110,673.20 : x
  2. Step 2: Convert to fraction form
    215,940.80/323,765.40 = 110,673.20/x
  3. Step 3: Cross multiply
    215,940.80x = 323,765.40 × 110,673.20
  4. Step 4: Simplify right side
    215,940.80x = 35,832,152,867.28
  5. Step 5: Solve for x
    x = 35,832,152,867.28/215,940.80
  6. Step 6: Final answer
    x = 165,935.08

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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.