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Finding the Fourth Proportional to 248,712.40, 372,849.90 and 148,912.30

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Solution

The fourth proportional to 248,712.40, 372,849.90 and 148,912.30 is: 223,237.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,712.40 : 372,849.90 = 148,912.30 : x
  2. Step 2: Convert to fraction form
    248,712.40/372,849.90 = 148,912.30/x
  3. Step 3: Cross multiply
    248,712.40x = 372,849.90 × 148,912.30
  4. Step 4: Simplify right side
    248,712.40x = 55,521,936,163.77
  5. Step 5: Solve for x
    x = 55,521,936,163.77/248,712.40
  6. Step 6: Final answer
    x = 223,237.51

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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.