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Finding the Fourth Proportional to 248,495.70, 372,743.55 and 90,729.30

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Solution

The fourth proportional to 248,495.70, 372,743.55 and 90,729.30 is: 136,093.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,495.70 : 372,743.55 = 90,729.30 : x
  2. Step 2: Convert to fraction form
    248,495.70/372,743.55 = 90,729.30/x
  3. Step 3: Cross multiply
    248,495.70x = 372,743.55 × 90,729.30
  4. Step 4: Simplify right side
    248,495.70x = 33,818,761,371.02
  5. Step 5: Solve for x
    x = 33,818,761,371.02/248,495.70
  6. Step 6: Final answer
    x = 136,093.95

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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.