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Finding the Fourth Proportional to 381,687.84, 526,845.44 and 238,356.64

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Solution

The fourth proportional to 381,687.84, 526,845.44 and 238,356.64 is: 329,004.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,687.84 : 526,845.44 = 238,356.64 : x
  2. Step 2: Convert to fraction form
    381,687.84/526,845.44 = 238,356.64/x
  3. Step 3: Cross multiply
    381,687.84x = 526,845.44 × 238,356.64
  4. Step 4: Simplify right side
    381,687.84x = 125,577,108,877.72
  5. Step 5: Solve for x
    x = 125,577,108,877.72/381,687.84
  6. Step 6: Final answer
    x = 329,004.74

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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.