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Finding the Fourth Proportional to 225,040.20, 310,690.20 and 140,272.08

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Solution

The fourth proportional to 225,040.20, 310,690.20 and 140,272.08 is: 193,659.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,040.20 : 310,690.20 = 140,272.08 : x
  2. Step 2: Convert to fraction form
    225,040.20/310,690.20 = 140,272.08/x
  3. Step 3: Cross multiply
    225,040.20x = 310,690.20 × 140,272.08
  4. Step 4: Simplify right side
    225,040.20x = 43,581,160,589.62
  5. Step 5: Solve for x
    x = 43,581,160,589.62/225,040.20
  6. Step 6: Final answer
    x = 193,659.45

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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.