Home / 490,867.38-736,219.05-135,917.28

Finding the Fourth Proportional to 490,867.38, 736,219.05 and 135,917.28

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Solution

The fourth proportional to 490,867.38, 736,219.05 and 135,917.28 is: 203,853.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,867.38 : 736,219.05 = 135,917.28 : x
  2. Step 2: Convert to fraction form
    490,867.38/736,219.05 = 135,917.28/x
  3. Step 3: Cross multiply
    490,867.38x = 736,219.05 × 135,917.28
  4. Step 4: Simplify right side
    490,867.38x = 100,064,890,760.18
  5. Step 5: Solve for x
    x = 100,064,890,760.18/490,867.38
  6. Step 6: Final answer
    x = 203,853.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.