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Finding the Fourth Proportional to 398,054.64, 549,137.88 and 268,951.56

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Solution

The fourth proportional to 398,054.64, 549,137.88 and 268,951.56 is: 371,033.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,054.64 : 549,137.88 = 268,951.56 : x
  2. Step 2: Convert to fraction form
    398,054.64/549,137.88 = 268,951.56/x
  3. Step 3: Cross multiply
    398,054.64x = 549,137.88 × 268,951.56
  4. Step 4: Simplify right side
    398,054.64x = 147,691,489,481.09
  5. Step 5: Solve for x
    x = 147,691,489,481.09/398,054.64
  6. Step 6: Final answer
    x = 371,033.21

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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.