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Finding the Fourth Proportional to 387,059.56, 580,626.06 and 150,420.52

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Solution

The fourth proportional to 387,059.56, 580,626.06 and 150,420.52 is: 225,645.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,059.56 : 580,626.06 = 150,420.52 : x
  2. Step 2: Convert to fraction form
    387,059.56/580,626.06 = 150,420.52/x
  3. Step 3: Cross multiply
    387,059.56x = 580,626.06 × 150,420.52
  4. Step 4: Simplify right side
    387,059.56x = 87,338,073,870.75
  5. Step 5: Solve for x
    x = 87,338,073,870.75/387,059.56
  6. Step 6: Final answer
    x = 225,645.05

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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.