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Finding the Fourth Proportional to 344,011.80, 515,580.30 and 166,135.80

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Solution

The fourth proportional to 344,011.80, 515,580.30 and 166,135.80 is: 248,992.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,011.80 : 515,580.30 = 166,135.80 : x
  2. Step 2: Convert to fraction form
    344,011.80/515,580.30 = 166,135.80/x
  3. Step 3: Cross multiply
    344,011.80x = 515,580.30 × 166,135.80
  4. Step 4: Simplify right side
    344,011.80x = 85,656,345,604.74
  5. Step 5: Solve for x
    x = 85,656,345,604.74/344,011.80
  6. Step 6: Final answer
    x = 248,992.46

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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.