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Finding the Fourth Proportional to 639,840.30, 959,022.20 and 240,226.19

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Solution

The fourth proportional to 639,840.30, 959,022.20 and 240,226.19 is: 360,062.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,840.30 : 959,022.20 = 240,226.19 : x
  2. Step 2: Convert to fraction form
    639,840.30/959,022.20 = 240,226.19/x
  3. Step 3: Cross multiply
    639,840.30x = 959,022.20 × 240,226.19
  4. Step 4: Simplify right side
    639,840.30x = 230,382,252,229.54
  5. Step 5: Solve for x
    x = 230,382,252,229.54/639,840.30
  6. Step 6: Final answer
    x = 360,062.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.