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Finding the Fourth Proportional to 235,849.94, 325,468.70 and 128,418.02

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Solution

The fourth proportional to 235,849.94, 325,468.70 and 128,418.02 is: 177,214.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,849.94 : 325,468.70 = 128,418.02 : x
  2. Step 2: Convert to fraction form
    235,849.94/325,468.70 = 128,418.02/x
  3. Step 3: Cross multiply
    235,849.94x = 325,468.70 × 128,418.02
  4. Step 4: Simplify right side
    235,849.94x = 41,796,046,025.97
  5. Step 5: Solve for x
    x = 41,796,046,025.97/235,849.94
  6. Step 6: Final answer
    x = 177,214.57

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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.