Home / 325,128.63-487,833.08-135,626.30

Finding the Fourth Proportional to 325,128.63, 487,833.08 and 135,626.30

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Solution

The fourth proportional to 325,128.63, 487,833.08 and 135,626.30 is: 203,497.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,128.63 : 487,833.08 = 135,626.30 : x
  2. Step 2: Convert to fraction form
    325,128.63/487,833.08 = 135,626.30/x
  3. Step 3: Cross multiply
    325,128.63x = 487,833.08 × 135,626.30
  4. Step 4: Simplify right side
    325,128.63x = 66,162,995,132.98
  5. Step 5: Solve for x
    x = 66,162,995,132.98/325,128.63
  6. Step 6: Final answer
    x = 203,497.90

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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.