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Finding the Fourth Proportional to 248,489.58, 372,620.16 and 79,978.80

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Solution

The fourth proportional to 248,489.58, 372,620.16 and 79,978.80 is: 119,931.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,489.58 : 372,620.16 = 79,978.80 : x
  2. Step 2: Convert to fraction form
    248,489.58/372,620.16 = 79,978.80/x
  3. Step 3: Cross multiply
    248,489.58x = 372,620.16 × 79,978.80
  4. Step 4: Simplify right side
    248,489.58x = 29,801,713,252.61
  5. Step 5: Solve for x
    x = 29,801,713,252.61/248,489.58
  6. Step 6: Final answer
    x = 119,931.44

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1.5x scale

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.