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Finding the Fourth Proportional to 225,613.17, 311,346.54 and 123,622.43

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Solution

The fourth proportional to 225,613.17, 311,346.54 and 123,622.43 is: 170,599.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,613.17 : 311,346.54 = 123,622.43 : x
  2. Step 2: Convert to fraction form
    225,613.17/311,346.54 = 123,622.43/x
  3. Step 3: Cross multiply
    225,613.17x = 311,346.54 × 123,622.43
  4. Step 4: Simplify right side
    225,613.17x = 38,489,414,290.16
  5. Step 5: Solve for x
    x = 38,489,414,290.16/225,613.17
  6. Step 6: Final answer
    x = 170,599.15

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1.5x scale

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.