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Finding the Fourth Proportional to 208,110.80, 312,216.60 and 60,366.80

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Solution

The fourth proportional to 208,110.80, 312,216.60 and 60,366.80 is: 90,564.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,110.80 : 312,216.60 = 60,366.80 : x
  2. Step 2: Convert to fraction form
    208,110.80/312,216.60 = 60,366.80/x
  3. Step 3: Cross multiply
    208,110.80x = 312,216.60 × 60,366.80
  4. Step 4: Simplify right side
    208,110.80x = 18,847,517,048.88
  5. Step 5: Solve for x
    x = 18,847,517,048.88/208,110.80
  6. Step 6: Final answer
    x = 90,564.82

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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.