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Finding the Fourth Proportional to 235,998.20, 325,681.04 and 128,568.20

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Solution

The fourth proportional to 235,998.20, 325,681.04 and 128,568.20 is: 177,426.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,998.20 : 325,681.04 = 128,568.20 : x
  2. Step 2: Convert to fraction form
    235,998.20/325,681.04 = 128,568.20/x
  3. Step 3: Cross multiply
    235,998.20x = 325,681.04 × 128,568.20
  4. Step 4: Simplify right side
    235,998.20x = 41,872,225,086.93
  5. Step 5: Solve for x
    x = 41,872,225,086.93/235,998.20
  6. Step 6: Final answer
    x = 177,426.04

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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.