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Finding the Fourth Proportional to 235,661.91, 325,211.91 and 128,232.36

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Solution

The fourth proportional to 235,661.91, 325,211.91 and 128,232.36 is: 176,959.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,661.91 : 325,211.91 = 128,232.36 : x
  2. Step 2: Convert to fraction form
    235,661.91/325,211.91 = 128,232.36/x
  3. Step 3: Cross multiply
    235,661.91x = 325,211.91 × 128,232.36
  4. Step 4: Simplify right side
    235,661.91x = 41,702,690,719.41
  5. Step 5: Solve for x
    x = 41,702,690,719.41/235,661.91
  6. Step 6: Final answer
    x = 176,959.83

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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.