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Finding the Fourth Proportional to 274,040.88, 378,181.08 and 153,184.56

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Solution

The fourth proportional to 274,040.88, 378,181.08 and 153,184.56 is: 211,397.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,040.88 : 378,181.08 = 153,184.56 : x
  2. Step 2: Convert to fraction form
    274,040.88/378,181.08 = 153,184.56/x
  3. Step 3: Cross multiply
    274,040.88x = 378,181.08 × 153,184.56
  4. Step 4: Simplify right side
    274,040.88x = 57,931,502,340.12
  5. Step 5: Solve for x
    x = 57,931,502,340.12/274,040.88
  6. Step 6: Final answer
    x = 211,397.30

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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.