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Finding the Fourth Proportional to 245,847.80, 368,382.90 and 206,190.20

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Solution

The fourth proportional to 245,847.80, 368,382.90 and 206,190.20 is: 308,959.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,847.80 : 368,382.90 = 206,190.20 : x
  2. Step 2: Convert to fraction form
    245,847.80/368,382.90 = 206,190.20/x
  3. Step 3: Cross multiply
    245,847.80x = 368,382.90 × 206,190.20
  4. Step 4: Simplify right side
    245,847.80x = 75,956,943,827.58
  5. Step 5: Solve for x
    x = 75,956,943,827.58/245,847.80
  6. Step 6: Final answer
    x = 308,959.22

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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.