Home / 206,721.10-310,081.65-198,847.90

Finding the Fourth Proportional to 206,721.10, 310,081.65 and 198,847.90

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Solution

The fourth proportional to 206,721.10, 310,081.65 and 198,847.90 is: 298,271.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,721.10 : 310,081.65 = 198,847.90 : x
  2. Step 2: Convert to fraction form
    206,721.10/310,081.65 = 198,847.90/x
  3. Step 3: Cross multiply
    206,721.10x = 310,081.65 × 198,847.90
  4. Step 4: Simplify right side
    206,721.10x = 61,659,084,931.04
  5. Step 5: Solve for x
    x = 61,659,084,931.04/206,721.10
  6. Step 6: Final answer
    x = 298,271.85

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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.