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Finding the Fourth Proportional to 270,257.81, 372,960.32 and 157,080.56

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Solution

The fourth proportional to 270,257.81, 372,960.32 and 157,080.56 is: 216,773.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,257.81 : 372,960.32 = 157,080.56 : x
  2. Step 2: Convert to fraction form
    270,257.81/372,960.32 = 157,080.56/x
  3. Step 3: Cross multiply
    270,257.81x = 372,960.32 × 157,080.56
  4. Step 4: Simplify right side
    270,257.81x = 58,584,813,273.17
  5. Step 5: Solve for x
    x = 58,584,813,273.17/270,257.81
  6. Step 6: Final answer
    x = 216,773.81

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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.