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Finding the Fourth Proportional to 235,682.72, 325,249 and 128,259.68

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Solution

The fourth proportional to 235,682.72, 325,249 and 128,259.68 is: 177,002.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,682.72 : 325,249 = 128,259.68 : x
  2. Step 2: Convert to fraction form
    235,682.72/325,249 = 128,259.68/x
  3. Step 3: Cross multiply
    235,682.72x = 325,249 × 128,259.68
  4. Step 4: Simplify right side
    235,682.72x = 41,716,332,660.32
  5. Step 5: Solve for x
    x = 41,716,332,660.32/235,682.72
  6. Step 6: Final answer
    x = 177,002.08

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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.