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Finding the Fourth Proportional to 225,690.30, 311,443.26 and 134,992.68

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Solution

The fourth proportional to 225,690.30, 311,443.26 and 134,992.68 is: 186,284.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,690.30 : 311,443.26 = 134,992.68 : x
  2. Step 2: Convert to fraction form
    225,690.30/311,443.26 = 134,992.68/x
  3. Step 3: Cross multiply
    225,690.30x = 311,443.26 × 134,992.68
  4. Step 4: Simplify right side
    225,690.30x = 42,042,560,335.34
  5. Step 5: Solve for x
    x = 42,042,560,335.34/225,690.30
  6. Step 6: Final answer
    x = 186,284.30

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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.