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Finding the Fourth Proportional to 235,810.76, 325,425.65 and 128,382.62

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Solution

The fourth proportional to 235,810.76, 325,425.65 and 128,382.62 is: 177,171.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,810.76 : 325,425.65 = 128,382.62 : x
  2. Step 2: Convert to fraction form
    235,810.76/325,425.65 = 128,382.62/x
  3. Step 3: Cross multiply
    235,810.76x = 325,425.65 × 128,382.62
  4. Step 4: Simplify right side
    235,810.76x = 41,778,995,293.16
  5. Step 5: Solve for x
    x = 41,778,995,293.16/235,810.76
  6. Step 6: Final answer
    x = 177,171.71

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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.