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Finding the Fourth Proportional to 305,817.65, 422,025.86 and 167,998.88

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Solution

The fourth proportional to 305,817.65, 422,025.86 and 167,998.88 is: 231,837.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,817.65 : 422,025.86 = 167,998.88 : x
  2. Step 2: Convert to fraction form
    305,817.65/422,025.86 = 167,998.88/x
  3. Step 3: Cross multiply
    305,817.65x = 422,025.86 × 167,998.88
  4. Step 4: Simplify right side
    305,817.65x = 70,899,871,811.04
  5. Step 5: Solve for x
    x = 70,899,871,811.04/305,817.65
  6. Step 6: Final answer
    x = 231,837.08

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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.