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Finding the Fourth Proportional to 270,083.88, 372,639.96 and 155,356.56

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Solution

The fourth proportional to 270,083.88, 372,639.96 and 155,356.56 is: 214,348.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,083.88 : 372,639.96 = 155,356.56 : x
  2. Step 2: Convert to fraction form
    270,083.88/372,639.96 = 155,356.56/x
  3. Step 3: Cross multiply
    270,083.88x = 372,639.96 × 155,356.56
  4. Step 4: Simplify right side
    270,083.88x = 57,892,062,304.14
  5. Step 5: Solve for x
    x = 57,892,062,304.14/270,083.88
  6. Step 6: Final answer
    x = 214,348.45

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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.