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Finding the Fourth Proportional to 366,989.80, 550,484.70 and 100,791.40

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Solution

The fourth proportional to 366,989.80, 550,484.70 and 100,791.40 is: 151,187.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,989.80 : 550,484.70 = 100,791.40 : x
  2. Step 2: Convert to fraction form
    366,989.80/550,484.70 = 100,791.40/x
  3. Step 3: Cross multiply
    366,989.80x = 550,484.70 × 100,791.40
  4. Step 4: Simplify right side
    366,989.80x = 55,484,123,591.58
  5. Step 5: Solve for x
    x = 55,484,123,591.58/366,989.80
  6. Step 6: Final answer
    x = 151,187.10

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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.