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Finding the Fourth Proportional to 248,468.40, 372,799.80 and 90,712.80

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Solution

The fourth proportional to 248,468.40, 372,799.80 and 90,712.80 is: 136,104.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,468.40 : 372,799.80 = 90,712.80 : x
  2. Step 2: Convert to fraction form
    248,468.40/372,799.80 = 90,712.80/x
  3. Step 3: Cross multiply
    248,468.40x = 372,799.80 × 90,712.80
  4. Step 4: Simplify right side
    248,468.40x = 33,817,713,697.44
  5. Step 5: Solve for x
    x = 33,817,713,697.44/248,468.40
  6. Step 6: Final answer
    x = 136,104.69

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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.