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Finding the Fourth Proportional to 340,380.20, 509,792.70 and 200,412.20

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Solution

The fourth proportional to 340,380.20, 509,792.70 and 200,412.20 is: 300,160.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,380.20 : 509,792.70 = 200,412.20 : x
  2. Step 2: Convert to fraction form
    340,380.20/509,792.70 = 200,412.20/x
  3. Step 3: Cross multiply
    340,380.20x = 509,792.70 × 200,412.20
  4. Step 4: Simplify right side
    340,380.20x = 102,168,676,550.94
  5. Step 5: Solve for x
    x = 102,168,676,550.94/340,380.20
  6. Step 6: Final answer
    x = 300,160.46

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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.