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Finding the Fourth Proportional to 306,389.50, 422,644.96 and 183,850.18

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Solution

The fourth proportional to 306,389.50, 422,644.96 and 183,850.18 is: 253,609.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,389.50 : 422,644.96 = 183,850.18 : x
  2. Step 2: Convert to fraction form
    306,389.50/422,644.96 = 183,850.18/x
  3. Step 3: Cross multiply
    306,389.50x = 422,644.96 × 183,850.18
  4. Step 4: Simplify right side
    306,389.50x = 77,703,351,972.09
  5. Step 5: Solve for x
    x = 77,703,351,972.09/306,389.50
  6. Step 6: Final answer
    x = 253,609.71

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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.