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Finding the Fourth Proportional to 235,768.87, 325,347.80 and 128,332.50

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Solution

The fourth proportional to 235,768.87, 325,347.80 and 128,332.50 is: 177,091.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,768.87 : 325,347.80 = 128,332.50 : x
  2. Step 2: Convert to fraction form
    235,768.87/325,347.80 = 128,332.50/x
  3. Step 3: Cross multiply
    235,768.87x = 325,347.80 × 128,332.50
  4. Step 4: Simplify right side
    235,768.87x = 41,752,694,275.10
  5. Step 5: Solve for x
    x = 41,752,694,275.10/235,768.87
  6. Step 6: Final answer
    x = 177,091.63

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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.