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Finding the Fourth Proportional to 248,072.40, 372,108.60 and 142,804.80

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Solution

The fourth proportional to 248,072.40, 372,108.60 and 142,804.80 is: 214,207.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,072.40 : 372,108.60 = 142,804.80 : x
  2. Step 2: Convert to fraction form
    248,072.40/372,108.60 = 142,804.80/x
  3. Step 3: Cross multiply
    248,072.40x = 372,108.60 × 142,804.80
  4. Step 4: Simplify right side
    248,072.40x = 53,138,894,201.28
  5. Step 5: Solve for x
    x = 53,138,894,201.28/248,072.40
  6. Step 6: Final answer
    x = 214,207.20

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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.