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Finding the Fourth Proportional to 388,100.36, 535,351.49 and 252,224.81

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Solution

The fourth proportional to 388,100.36, 535,351.49 and 252,224.81 is: 347,922.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,100.36 : 535,351.49 = 252,224.81 : x
  2. Step 2: Convert to fraction form
    388,100.36/535,351.49 = 252,224.81/x
  3. Step 3: Cross multiply
    388,100.36x = 535,351.49 × 252,224.81
  4. Step 4: Simplify right side
    388,100.36x = 135,028,927,848.47
  5. Step 5: Solve for x
    x = 135,028,927,848.47/388,100.36
  6. Step 6: Final answer
    x = 347,922.71

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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.