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Finding the Fourth Proportional to 386,679.60, 580,230.81 and 150,031.62

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Solution

The fourth proportional to 386,679.60, 580,230.81 and 150,031.62 is: 225,129.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,679.60 : 580,230.81 = 150,031.62 : x
  2. Step 2: Convert to fraction form
    386,679.60/580,230.81 = 150,031.62/x
  3. Step 3: Cross multiply
    386,679.60x = 580,230.81 × 150,031.62
  4. Step 4: Simplify right side
    386,679.60x = 87,052,968,398.21
  5. Step 5: Solve for x
    x = 87,052,968,398.21/386,679.60
  6. Step 6: Final answer
    x = 225,129.46

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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.