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Finding the Fourth Proportional to 235,810.37, 325,425.13 and 128,382.23

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Solution

The fourth proportional to 235,810.37, 325,425.13 and 128,382.23 is: 177,171.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,810.37 : 325,425.13 = 128,382.23 : x
  2. Step 2: Convert to fraction form
    235,810.37/325,425.13 = 128,382.23/x
  3. Step 3: Cross multiply
    235,810.37x = 325,425.13 × 128,382.23
  4. Step 4: Simplify right side
    235,810.37x = 41,778,804,380.05
  5. Step 5: Solve for x
    x = 41,778,804,380.05/235,810.37
  6. Step 6: Final answer
    x = 177,171.19

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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.