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Finding the Fourth Proportional to 638,365.76, 957,185.76 and 264,184.64

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Solution

The fourth proportional to 638,365.76, 957,185.76 and 264,184.64 is: 396,126.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,365.76 : 957,185.76 = 264,184.64 : x
  2. Step 2: Convert to fraction form
    638,365.76/957,185.76 = 264,184.64/x
  3. Step 3: Cross multiply
    638,365.76x = 957,185.76 × 264,184.64
  4. Step 4: Simplify right side
    638,365.76x = 252,873,775,418.73
  5. Step 5: Solve for x
    x = 252,873,775,418.73/638,365.76
  6. Step 6: Final answer
    x = 396,126.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.