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Finding the Fourth Proportional to 248,420.40, 372,630.60 and 61,431.90

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Solution

The fourth proportional to 248,420.40, 372,630.60 and 61,431.90 is: 92,147.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,420.40 : 372,630.60 = 61,431.90 : x
  2. Step 2: Convert to fraction form
    248,420.40/372,630.60 = 61,431.90/x
  3. Step 3: Cross multiply
    248,420.40x = 372,630.60 × 61,431.90
  4. Step 4: Simplify right side
    248,420.40x = 22,891,405,756.14
  5. Step 5: Solve for x
    x = 22,891,405,756.14/248,420.40
  6. Step 6: Final answer
    x = 92,147.85

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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.