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Finding the Fourth Proportional to 248,620.60, 372,930.90 and 90,828.55

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Solution

The fourth proportional to 248,620.60, 372,930.90 and 90,828.55 is: 136,242.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,620.60 : 372,930.90 = 90,828.55 : x
  2. Step 2: Convert to fraction form
    248,620.60/372,930.90 = 90,828.55/x
  3. Step 3: Cross multiply
    248,620.60x = 372,930.90 × 90,828.55
  4. Step 4: Simplify right side
    248,620.60x = 33,872,772,897.20
  5. Step 5: Solve for x
    x = 33,872,772,897.20/248,620.60
  6. Step 6: Final answer
    x = 136,242.83

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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.