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Finding the Fourth Proportional to 248,716.80, 372,938.40 and 169,920

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Solution

The fourth proportional to 248,716.80, 372,938.40 and 169,920 is: 254,786.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,716.80 : 372,938.40 = 169,920 : x
  2. Step 2: Convert to fraction form
    248,716.80/372,938.40 = 169,920/x
  3. Step 3: Cross multiply
    248,716.80x = 372,938.40 × 169,920
  4. Step 4: Simplify right side
    248,716.80x = 63,369,692,928.00
  5. Step 5: Solve for x
    x = 63,369,692,928.00/248,716.80
  6. Step 6: Final answer
    x = 254,786.54

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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.