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Finding the Fourth Proportional to 368,120.20, 551,402.70 and 305,912.20

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Solution

The fourth proportional to 368,120.20, 551,402.70 and 305,912.20 is: 458,222.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,120.20 : 551,402.70 = 305,912.20 : x
  2. Step 2: Convert to fraction form
    368,120.20/551,402.70 = 305,912.20/x
  3. Step 3: Cross multiply
    368,120.20x = 551,402.70 × 305,912.20
  4. Step 4: Simplify right side
    368,120.20x = 168,680,813,042.94
  5. Step 5: Solve for x
    x = 168,680,813,042.94/368,120.20
  6. Step 6: Final answer
    x = 458,222.11

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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.