Home / 680,103.20-1,020,154.80-206,787.80

Finding the Fourth Proportional to 680,103.20, 1,020,154.80 and 206,787.80

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Solution

The fourth proportional to 680,103.20, 1,020,154.80 and 206,787.80 is: 310,181.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,103.20 : 1,020,154.80 = 206,787.80 : x
  2. Step 2: Convert to fraction form
    680,103.20/1,020,154.80 = 206,787.80/x
  3. Step 3: Cross multiply
    680,103.20x = 1,020,154.80 × 206,787.80
  4. Step 4: Simplify right side
    680,103.20x = 210,955,566,751.44
  5. Step 5: Solve for x
    x = 210,955,566,751.44/680,103.20
  6. Step 6: Final answer
    x = 310,181.70

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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.