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Finding the Fourth Proportional to 621,802.20, 932,703.30 and 201,120.60

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Solution

The fourth proportional to 621,802.20, 932,703.30 and 201,120.60 is: 301,680.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,802.20 : 932,703.30 = 201,120.60 : x
  2. Step 2: Convert to fraction form
    621,802.20/932,703.30 = 201,120.60/x
  3. Step 3: Cross multiply
    621,802.20x = 932,703.30 × 201,120.60
  4. Step 4: Simplify right side
    621,802.20x = 187,585,847,317.98
  5. Step 5: Solve for x
    x = 187,585,847,317.98/621,802.20
  6. Step 6: Final answer
    x = 301,680.90

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Similar ratio
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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.