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Finding the Fourth Proportional to 386,485, 533,167.86 and 273,370.12

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Solution

The fourth proportional to 386,485, 533,167.86 and 273,370.12 is: 377,122.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,485 : 533,167.86 = 273,370.12 : x
  2. Step 2: Convert to fraction form
    386,485/533,167.86 = 273,370.12/x
  3. Step 3: Cross multiply
    386,485x = 533,167.86 × 273,370.12
  4. Step 4: Simplify right side
    386,485x = 145,752,161,868.34
  5. Step 5: Solve for x
    x = 145,752,161,868.34/386,485
  6. Step 6: Final answer
    x = 377,122.43

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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.