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Finding the Fourth Proportional to 246,991.85, 340,723.35 and 156,194.90

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Solution

The fourth proportional to 246,991.85, 340,723.35 and 156,194.90 is: 215,469.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,991.85 : 340,723.35 = 156,194.90 : x
  2. Step 2: Convert to fraction form
    246,991.85/340,723.35 = 156,194.90/x
  3. Step 3: Cross multiply
    246,991.85x = 340,723.35 × 156,194.90
  4. Step 4: Simplify right side
    246,991.85x = 53,219,249,580.92
  5. Step 5: Solve for x
    x = 53,219,249,580.92/246,991.85
  6. Step 6: Final answer
    x = 215,469.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.