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Finding the Fourth Proportional to 248,583.80, 372,929.70 and 90,812

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Solution

The fourth proportional to 248,583.80, 372,929.70 and 90,812 is: 136,237.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,583.80 : 372,929.70 = 90,812 : x
  2. Step 2: Convert to fraction form
    248,583.80/372,929.70 = 90,812/x
  3. Step 3: Cross multiply
    248,583.80x = 372,929.70 × 90,812
  4. Step 4: Simplify right side
    248,583.80x = 33,866,491,916.40
  5. Step 5: Solve for x
    x = 33,866,491,916.40/248,583.80
  6. Step 6: Final answer
    x = 136,237.73

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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.