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Finding the Fourth Proportional to 248,192.70, 372,138.87 and 111,390.57

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Solution

The fourth proportional to 248,192.70, 372,138.87 and 111,390.57 is: 167,018.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,192.70 : 372,138.87 = 111,390.57 : x
  2. Step 2: Convert to fraction form
    248,192.70/372,138.87 = 111,390.57/x
  3. Step 3: Cross multiply
    248,192.70x = 372,138.87 × 111,390.57
  4. Step 4: Simplify right side
    248,192.70x = 41,452,760,848.46
  5. Step 5: Solve for x
    x = 41,452,760,848.46/248,192.70
  6. Step 6: Final answer
    x = 167,018.45

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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.