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Finding the Fourth Proportional to 290,534.39, 400,974.91 and 163,234.59

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Solution

The fourth proportional to 290,534.39, 400,974.91 and 163,234.59 is: 225,284.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,534.39 : 400,974.91 = 163,234.59 : x
  2. Step 2: Convert to fraction form
    290,534.39/400,974.91 = 163,234.59/x
  3. Step 3: Cross multiply
    290,534.39x = 400,974.91 × 163,234.59
  4. Step 4: Simplify right side
    290,534.39x = 65,452,975,034.14
  5. Step 5: Solve for x
    x = 65,452,975,034.14/290,534.39
  6. Step 6: Final answer
    x = 225,284.78

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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.