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Finding the Fourth Proportional to 325,331.34, 487,833.30 and 135,742.56

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Solution

The fourth proportional to 325,331.34, 487,833.30 and 135,742.56 is: 203,545.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,331.34 : 487,833.30 = 135,742.56 : x
  2. Step 2: Convert to fraction form
    325,331.34/487,833.30 = 135,742.56/x
  3. Step 3: Cross multiply
    325,331.34x = 487,833.30 × 135,742.56
  4. Step 4: Simplify right side
    325,331.34x = 66,219,740,995.25
  5. Step 5: Solve for x
    x = 66,219,740,995.25/325,331.34
  6. Step 6: Final answer
    x = 203,545.53

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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.