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Finding the Fourth Proportional to 381,118.56, 525,905.68 and 220,025.60

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Solution

The fourth proportional to 381,118.56, 525,905.68 and 220,025.60 is: 303,613.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,118.56 : 525,905.68 = 220,025.60 : x
  2. Step 2: Convert to fraction form
    381,118.56/525,905.68 = 220,025.60/x
  3. Step 3: Cross multiply
    381,118.56x = 525,905.68 × 220,025.60
  4. Step 4: Simplify right side
    381,118.56x = 115,712,712,785.41
  5. Step 5: Solve for x
    x = 115,712,712,785.41/381,118.56
  6. Step 6: Final answer
    x = 303,613.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.