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Finding the Fourth Proportional to 248,051.20, 372,076.80 and 79,571.20

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Solution

The fourth proportional to 248,051.20, 372,076.80 and 79,571.20 is: 119,356.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,051.20 : 372,076.80 = 79,571.20 : x
  2. Step 2: Convert to fraction form
    248,051.20/372,076.80 = 79,571.20/x
  3. Step 3: Cross multiply
    248,051.20x = 372,076.80 × 79,571.20
  4. Step 4: Simplify right side
    248,051.20x = 29,606,597,468.16
  5. Step 5: Solve for x
    x = 29,606,597,468.16/248,051.20
  6. Step 6: Final answer
    x = 119,356.80

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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.