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Finding the Fourth Proportional to 428,185.49, 590,744.48 and 255,983.94

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Solution

The fourth proportional to 428,185.49, 590,744.48 and 255,983.94 is: 353,167.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,185.49 : 590,744.48 = 255,983.94 : x
  2. Step 2: Convert to fraction form
    428,185.49/590,744.48 = 255,983.94/x
  3. Step 3: Cross multiply
    428,185.49x = 590,744.48 × 255,983.94
  4. Step 4: Simplify right side
    428,185.49x = 151,221,098,243.73
  5. Step 5: Solve for x
    x = 151,221,098,243.73/428,185.49
  6. Step 6: Final answer
    x = 353,167.27

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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.