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Finding the Fourth Proportional to 248,054.40, 372,081.60 and 142,786.80

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Solution

The fourth proportional to 248,054.40, 372,081.60 and 142,786.80 is: 214,180.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,054.40 : 372,081.60 = 142,786.80 : x
  2. Step 2: Convert to fraction form
    248,054.40/372,081.60 = 142,786.80/x
  3. Step 3: Cross multiply
    248,054.40x = 372,081.60 × 142,786.80
  4. Step 4: Simplify right side
    248,054.40x = 53,128,341,002.88
  5. Step 5: Solve for x
    x = 53,128,341,002.88/248,054.40
  6. Step 6: Final answer
    x = 214,180.20

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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.