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Finding the Fourth Proportional to 206,636.85, 310,033.20 and 140,698.80

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Solution

The fourth proportional to 206,636.85, 310,033.20 and 140,698.80 is: 211,101.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,636.85 : 310,033.20 = 140,698.80 : x
  2. Step 2: Convert to fraction form
    206,636.85/310,033.20 = 140,698.80/x
  3. Step 3: Cross multiply
    206,636.85x = 310,033.20 × 140,698.80
  4. Step 4: Simplify right side
    206,636.85x = 43,621,299,200.16
  5. Step 5: Solve for x
    x = 43,621,299,200.16/206,636.85
  6. Step 6: Final answer
    x = 211,101.26

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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.