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Finding the Fourth Proportional to 235,992.70, 325,670.52 and 128,563.51

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Solution

The fourth proportional to 235,992.70, 325,670.52 and 128,563.51 is: 177,417.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,992.70 : 325,670.52 = 128,563.51 : x
  2. Step 2: Convert to fraction form
    235,992.70/325,670.52 = 128,563.51/x
  3. Step 3: Cross multiply
    235,992.70x = 325,670.52 × 128,563.51
  4. Step 4: Simplify right side
    235,992.70x = 41,869,345,154.73
  5. Step 5: Solve for x
    x = 41,869,345,154.73/235,992.70
  6. Step 6: Final answer
    x = 177,417.97

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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.