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Finding the Fourth Proportional to 235,991.98, 325,667.32 and 128,562.09

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Solution

The fourth proportional to 235,991.98, 325,667.32 and 128,562.09 is: 177,414.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,991.98 : 325,667.32 = 128,562.09 : x
  2. Step 2: Convert to fraction form
    235,991.98/325,667.32 = 128,562.09/x
  3. Step 3: Cross multiply
    235,991.98x = 325,667.32 × 128,562.09
  4. Step 4: Simplify right side
    235,991.98x = 41,868,471,303.90
  5. Step 5: Solve for x
    x = 41,868,471,303.90/235,991.98
  6. Step 6: Final answer
    x = 177,414.81

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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.