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Finding the Fourth Proportional to 340,282.20, 509,645.70 and 200,314.20

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Solution

The fourth proportional to 340,282.20, 509,645.70 and 200,314.20 is: 300,013.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,282.20 : 509,645.70 = 200,314.20 : x
  2. Step 2: Convert to fraction form
    340,282.20/509,645.70 = 200,314.20/x
  3. Step 3: Cross multiply
    340,282.20x = 509,645.70 × 200,314.20
  4. Step 4: Simplify right side
    340,282.20x = 102,089,270,678.94
  5. Step 5: Solve for x
    x = 102,089,270,678.94/340,282.20
  6. Step 6: Final answer
    x = 300,013.55

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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.