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Finding the Fourth Proportional to 269,941.48, 405,157.98 and 143,687.80

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Solution

The fourth proportional to 269,941.48, 405,157.98 and 143,687.80 is: 215,662.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,941.48 : 405,157.98 = 143,687.80 : x
  2. Step 2: Convert to fraction form
    269,941.48/405,157.98 = 143,687.80/x
  3. Step 3: Cross multiply
    269,941.48x = 405,157.98 × 143,687.80
  4. Step 4: Simplify right side
    269,941.48x = 58,216,258,798.64
  5. Step 5: Solve for x
    x = 58,216,258,798.64/269,941.48
  6. Step 6: Final answer
    x = 215,662.52

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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.