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Finding the Fourth Proportional to 275,637.80, 413,456.70 and 213,429.80

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Solution

The fourth proportional to 275,637.80, 413,456.70 and 213,429.80 is: 320,144.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,637.80 : 413,456.70 = 213,429.80 : x
  2. Step 2: Convert to fraction form
    275,637.80/413,456.70 = 213,429.80/x
  3. Step 3: Cross multiply
    275,637.80x = 413,456.70 × 213,429.80
  4. Step 4: Simplify right side
    275,637.80x = 88,243,980,789.66
  5. Step 5: Solve for x
    x = 88,243,980,789.66/275,637.80
  6. Step 6: Final answer
    x = 320,144.70

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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.