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Finding the Fourth Proportional to 306,381.27, 422,800.07 and 170,410.57

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Solution

The fourth proportional to 306,381.27, 422,800.07 and 170,410.57 is: 235,163.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,381.27 : 422,800.07 = 170,410.57 : x
  2. Step 2: Convert to fraction form
    306,381.27/422,800.07 = 170,410.57/x
  3. Step 3: Cross multiply
    306,381.27x = 422,800.07 × 170,410.57
  4. Step 4: Simplify right side
    306,381.27x = 72,049,600,370.13
  5. Step 5: Solve for x
    x = 72,049,600,370.13/306,381.27
  6. Step 6: Final answer
    x = 235,163.20

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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.