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Finding the Fourth Proportional to 386,991.70, 580,264.07 and 150,057.59

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Solution

The fourth proportional to 386,991.70, 580,264.07 and 150,057.59 is: 224,999.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,991.70 : 580,264.07 = 150,057.59 : x
  2. Step 2: Convert to fraction form
    386,991.70/580,264.07 = 150,057.59/x
  3. Step 3: Cross multiply
    386,991.70x = 580,264.07 × 150,057.59
  4. Step 4: Simplify right side
    386,991.70x = 87,073,026,099.19
  5. Step 5: Solve for x
    x = 87,073,026,099.19/386,991.70
  6. Step 6: Final answer
    x = 224,999.72

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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.