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Finding the Fourth Proportional to 270,366.08, 405,570.16 and 80,812

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Solution

The fourth proportional to 270,366.08, 405,570.16 and 80,812 is: 121,224.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,366.08 : 405,570.16 = 80,812 : x
  2. Step 2: Convert to fraction form
    270,366.08/405,570.16 = 80,812/x
  3. Step 3: Cross multiply
    270,366.08x = 405,570.16 × 80,812
  4. Step 4: Simplify right side
    270,366.08x = 32,774,935,769.92
  5. Step 5: Solve for x
    x = 32,774,935,769.92/270,366.08
  6. Step 6: Final answer
    x = 121,224.29

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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.