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Finding the Fourth Proportional to 308,718.18, 425,622.69 and 222,605.10

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Solution

The fourth proportional to 308,718.18, 425,622.69 and 222,605.10 is: 306,900.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,718.18 : 425,622.69 = 222,605.10 : x
  2. Step 2: Convert to fraction form
    308,718.18/425,622.69 = 222,605.10/x
  3. Step 3: Cross multiply
    308,718.18x = 425,622.69 × 222,605.10
  4. Step 4: Simplify right side
    308,718.18x = 94,745,781,469.72
  5. Step 5: Solve for x
    x = 94,745,781,469.72/308,718.18
  6. Step 6: Final answer
    x = 306,900.56

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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.