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Finding the Fourth Proportional to 340,154.40, 509,794.20 and 206,893.20

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Solution

The fourth proportional to 340,154.40, 509,794.20 and 206,893.20 is: 310,073.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,154.40 : 509,794.20 = 206,893.20 : x
  2. Step 2: Convert to fraction form
    340,154.40/509,794.20 = 206,893.20/x
  3. Step 3: Cross multiply
    340,154.40x = 509,794.20 × 206,893.20
  4. Step 4: Simplify right side
    340,154.40x = 105,472,953,379.44
  5. Step 5: Solve for x
    x = 105,472,953,379.44/340,154.40
  6. Step 6: Final answer
    x = 310,073.76

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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.