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Finding the Fourth Proportional to 658,529.28, 987,690.48 and 209,190.96

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Solution

The fourth proportional to 658,529.28, 987,690.48 and 209,190.96 is: 313,753.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,529.28 : 987,690.48 = 209,190.96 : x
  2. Step 2: Convert to fraction form
    658,529.28/987,690.48 = 209,190.96/x
  3. Step 3: Cross multiply
    658,529.28x = 987,690.48 × 209,190.96
  4. Step 4: Simplify right side
    658,529.28x = 206,615,919,694.06
  5. Step 5: Solve for x
    x = 206,615,919,694.06/658,529.28
  6. Step 6: Final answer
    x = 313,753.58

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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.