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Finding the Fourth Proportional to 367,941.80, 551,912.70 and 339,948.20

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Solution

The fourth proportional to 367,941.80, 551,912.70 and 339,948.20 is: 509,922.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,941.80 : 551,912.70 = 339,948.20 : x
  2. Step 2: Convert to fraction form
    367,941.80/551,912.70 = 339,948.20/x
  3. Step 3: Cross multiply
    367,941.80x = 551,912.70 × 339,948.20
  4. Step 4: Simplify right side
    367,941.80x = 187,621,728,922.14
  5. Step 5: Solve for x
    x = 187,621,728,922.14/367,941.80
  6. Step 6: Final answer
    x = 509,922.30

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Double scale
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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.