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Finding the Fourth Proportional to 206,874.80, 310,312.20 and 73,759.40

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Solution

The fourth proportional to 206,874.80, 310,312.20 and 73,759.40 is: 110,639.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,874.80 : 310,312.20 = 73,759.40 : x
  2. Step 2: Convert to fraction form
    206,874.80/310,312.20 = 73,759.40/x
  3. Step 3: Cross multiply
    206,874.80x = 310,312.20 × 73,759.40
  4. Step 4: Simplify right side
    206,874.80x = 22,888,441,684.68
  5. Step 5: Solve for x
    x = 22,888,441,684.68/206,874.80
  6. Step 6: Final answer
    x = 110,639.10

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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.