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Finding the Fourth Proportional to 354,635.10, 531,520.65 and 154,532.70

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Solution

The fourth proportional to 354,635.10, 531,520.65 and 154,532.70 is: 231,610.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,635.10 : 531,520.65 = 154,532.70 : x
  2. Step 2: Convert to fraction form
    354,635.10/531,520.65 = 154,532.70/x
  3. Step 3: Cross multiply
    354,635.10x = 531,520.65 × 154,532.70
  4. Step 4: Simplify right side
    354,635.10x = 82,137,321,150.26
  5. Step 5: Solve for x
    x = 82,137,321,150.26/354,635.10
  6. Step 6: Final answer
    x = 231,610.81

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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.