Home / 235,680.47-325,245.89-128,257.43

Finding the Fourth Proportional to 235,680.47, 325,245.89 and 128,257.43

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Solution

The fourth proportional to 235,680.47, 325,245.89 and 128,257.43 is: 176,998.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,680.47 : 325,245.89 = 128,257.43 : x
  2. Step 2: Convert to fraction form
    235,680.47/325,245.89 = 128,257.43/x
  3. Step 3: Cross multiply
    235,680.47x = 325,245.89 × 128,257.43
  4. Step 4: Simplify right side
    235,680.47x = 41,715,202,290.11
  5. Step 5: Solve for x
    x = 41,715,202,290.11/235,680.47
  6. Step 6: Final answer
    x = 176,998.98

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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.