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Finding the Fourth Proportional to 235,849.57, 325,468.19 and 128,417.65

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Solution

The fourth proportional to 235,849.57, 325,468.19 and 128,417.65 is: 177,214.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,849.57 : 325,468.19 = 128,417.65 : x
  2. Step 2: Convert to fraction form
    235,849.57/325,468.19 = 128,417.65/x
  3. Step 3: Cross multiply
    235,849.57x = 325,468.19 × 128,417.65
  4. Step 4: Simplify right side
    235,849.57x = 41,795,857,840.12
  5. Step 5: Solve for x
    x = 41,795,857,840.12/235,849.57
  6. Step 6: Final answer
    x = 177,214.06

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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.