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Finding the Fourth Proportional to 388,305.84, 535,656.54 and 267,236.94

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Solution

The fourth proportional to 388,305.84, 535,656.54 and 267,236.94 is: 368,645.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,305.84 : 535,656.54 = 267,236.94 : x
  2. Step 2: Convert to fraction form
    388,305.84/535,656.54 = 267,236.94/x
  3. Step 3: Cross multiply
    388,305.84x = 535,656.54 × 267,236.94
  4. Step 4: Simplify right side
    388,305.84x = 143,147,214,640.59
  5. Step 5: Solve for x
    x = 143,147,214,640.59/388,305.84
  6. Step 6: Final answer
    x = 368,645.54

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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.