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Finding the Fourth Proportional to 340,285.70, 509,866.90 and 197,730.81

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Solution

The fourth proportional to 340,285.70, 509,866.90 and 197,730.81 is: 296,269.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,285.70 : 509,866.90 = 197,730.81 : x
  2. Step 2: Convert to fraction form
    340,285.70/509,866.90 = 197,730.81/x
  3. Step 3: Cross multiply
    340,285.70x = 509,866.90 × 197,730.81
  4. Step 4: Simplify right side
    340,285.70x = 100,816,394,634.86
  5. Step 5: Solve for x
    x = 100,816,394,634.86/340,285.70
  6. Step 6: Final answer
    x = 296,269.85

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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.