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Finding the Fourth Proportional to 270,143.69, 372,820.74 and 149,308.58

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Solution

The fourth proportional to 270,143.69, 372,820.74 and 149,308.58 is: 206,058.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,143.69 : 372,820.74 = 149,308.58 : x
  2. Step 2: Convert to fraction form
    270,143.69/372,820.74 = 149,308.58/x
  3. Step 3: Cross multiply
    270,143.69x = 372,820.74 × 149,308.58
  4. Step 4: Simplify right side
    270,143.69x = 55,665,335,283.95
  5. Step 5: Solve for x
    x = 55,665,335,283.95/270,143.69
  6. Step 6: Final answer
    x = 206,058.25

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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.