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Finding the Fourth Proportional to 306,433.53, 422,529.62 and 215,760.51

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Solution

The fourth proportional to 306,433.53, 422,529.62 and 215,760.51 is: 297,504.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,433.53 : 422,529.62 = 215,760.51 : x
  2. Step 2: Convert to fraction form
    306,433.53/422,529.62 = 215,760.51/x
  3. Step 3: Cross multiply
    306,433.53x = 422,529.62 × 215,760.51
  4. Step 4: Simplify right side
    306,433.53x = 91,165,205,222.50
  5. Step 5: Solve for x
    x = 91,165,205,222.50/306,433.53
  6. Step 6: Final answer
    x = 297,504.01

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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.