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Finding the Fourth Proportional to 225,612.17, 311,345.16 and 123,621.43

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Solution

The fourth proportional to 225,612.17, 311,345.16 and 123,621.43 is: 170,597.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,612.17 : 311,345.16 = 123,621.43 : x
  2. Step 2: Convert to fraction form
    225,612.17/311,345.16 = 123,621.43/x
  3. Step 3: Cross multiply
    225,612.17x = 311,345.16 × 123,621.43
  4. Step 4: Simplify right side
    225,612.17x = 38,488,932,346.05
  5. Step 5: Solve for x
    x = 38,488,932,346.05/225,612.17
  6. Step 6: Final answer
    x = 170,597.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.