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Finding the Fourth Proportional to 225,040.70, 310,690.89 and 140,272.58

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Solution

The fourth proportional to 225,040.70, 310,690.89 and 140,272.58 is: 193,660.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,040.70 : 310,690.89 = 140,272.58 : x
  2. Step 2: Convert to fraction form
    225,040.70/310,690.89 = 140,272.58/x
  3. Step 3: Cross multiply
    225,040.70x = 310,690.89 × 140,272.58
  4. Step 4: Simplify right side
    225,040.70x = 43,581,412,722.80
  5. Step 5: Solve for x
    x = 43,581,412,722.80/225,040.70
  6. Step 6: Final answer
    x = 193,660.14

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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.