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Finding the Fourth Proportional to 388,099.36, 535,350.11 and 252,223.81

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Solution

The fourth proportional to 388,099.36, 535,350.11 and 252,223.81 is: 347,921.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,099.36 : 535,350.11 = 252,223.81 : x
  2. Step 2: Convert to fraction form
    388,099.36/535,350.11 = 252,223.81/x
  3. Step 3: Cross multiply
    388,099.36x = 535,350.11 × 252,223.81
  4. Step 4: Simplify right side
    388,099.36x = 135,028,042,716.67
  5. Step 5: Solve for x
    x = 135,028,042,716.67/388,099.36
  6. Step 6: Final answer
    x = 347,921.32

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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.