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Finding the Fourth Proportional to 235,770.32, 325,362.84 and 128,340.20

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Solution

The fourth proportional to 235,770.32, 325,362.84 and 128,340.20 is: 177,109.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,770.32 : 325,362.84 = 128,340.20 : x
  2. Step 2: Convert to fraction form
    235,770.32/325,362.84 = 128,340.20/x
  3. Step 3: Cross multiply
    235,770.32x = 325,362.84 × 128,340.20
  4. Step 4: Simplify right side
    235,770.32x = 41,757,131,958.17
  5. Step 5: Solve for x
    x = 41,757,131,958.17/235,770.32
  6. Step 6: Final answer
    x = 177,109.37

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1.5x scale

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.