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Finding the Fourth Proportional to 987,343.89, 1,481,016.03 and 239,389.89

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Solution

The fourth proportional to 987,343.89, 1,481,016.03 and 239,389.89 is: 359,084.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,343.89 : 1,481,016.03 = 239,389.89 : x
  2. Step 2: Convert to fraction form
    987,343.89/1,481,016.03 = 239,389.89/x
  3. Step 3: Cross multiply
    987,343.89x = 1,481,016.03 × 239,389.89
  4. Step 4: Simplify right side
    987,343.89x = 354,540,264,509.94
  5. Step 5: Solve for x
    x = 354,540,264,509.94/987,343.89
  6. Step 6: Final answer
    x = 359,084.88

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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.