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Finding the Fourth Proportional to 355,245.40, 532,843.80 and 115,355.80

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Solution

The fourth proportional to 355,245.40, 532,843.80 and 115,355.80 is: 173,025.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,245.40 : 532,843.80 = 115,355.80 : x
  2. Step 2: Convert to fraction form
    355,245.40/532,843.80 = 115,355.80/x
  3. Step 3: Cross multiply
    355,245.40x = 532,843.80 × 115,355.80
  4. Step 4: Simplify right side
    355,245.40x = 61,466,622,824.04
  5. Step 5: Solve for x
    x = 61,466,622,824.04/355,245.40
  6. Step 6: Final answer
    x = 173,025.81

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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.