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Finding the Fourth Proportional to 243,073.72, 335,334.93 and 231,817.50

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Solution

The fourth proportional to 243,073.72, 335,334.93 and 231,817.50 is: 319,806.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,073.72 : 335,334.93 = 231,817.50 : x
  2. Step 2: Convert to fraction form
    243,073.72/335,334.93 = 231,817.50/x
  3. Step 3: Cross multiply
    243,073.72x = 335,334.93 × 231,817.50
  4. Step 4: Simplify right side
    243,073.72x = 77,736,504,265.96
  5. Step 5: Solve for x
    x = 77,736,504,265.96/243,073.72
  6. Step 6: Final answer
    x = 319,806.29

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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.