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Finding the Fourth Proportional to 272,979.40, 409,728.30 and 168,003.40

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Solution

The fourth proportional to 272,979.40, 409,728.30 and 168,003.40 is: 252,164.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,979.40 : 409,728.30 = 168,003.40 : x
  2. Step 2: Convert to fraction form
    272,979.40/409,728.30 = 168,003.40/x
  3. Step 3: Cross multiply
    272,979.40x = 409,728.30 × 168,003.40
  4. Step 4: Simplify right side
    272,979.40x = 68,835,747,476.22
  5. Step 5: Solve for x
    x = 68,835,747,476.22/272,979.40
  6. Step 6: Final answer
    x = 252,164.62

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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.