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Finding the Fourth Proportional to 340,516.70, 509,997.45 and 200,548.70

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Solution

The fourth proportional to 340,516.70, 509,997.45 and 200,548.70 is: 300,365.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,516.70 : 509,997.45 = 200,548.70 : x
  2. Step 2: Convert to fraction form
    340,516.70/509,997.45 = 200,548.70/x
  3. Step 3: Cross multiply
    340,516.70x = 509,997.45 × 200,548.70
  4. Step 4: Simplify right side
    340,516.70x = 102,279,325,600.82
  5. Step 5: Solve for x
    x = 102,279,325,600.82/340,516.70
  6. Step 6: Final answer
    x = 300,365.08

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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.