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Finding the Fourth Proportional to 306,184.49, 422,549.01 and 170,220.72

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Solution

The fourth proportional to 306,184.49, 422,549.01 and 170,220.72 is: 234,912.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,184.49 : 422,549.01 = 170,220.72 : x
  2. Step 2: Convert to fraction form
    306,184.49/422,549.01 = 170,220.72/x
  3. Step 3: Cross multiply
    306,184.49x = 422,549.01 × 170,220.72
  4. Step 4: Simplify right side
    306,184.49x = 71,926,598,302.05
  5. Step 5: Solve for x
    x = 71,926,598,302.05/306,184.49
  6. Step 6: Final answer
    x = 234,912.61

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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.