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Finding the Fourth Proportional to 248,662.20, 372,993.30 and 155,220.60

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Solution

The fourth proportional to 248,662.20, 372,993.30 and 155,220.60 is: 232,830.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,662.20 : 372,993.30 = 155,220.60 : x
  2. Step 2: Convert to fraction form
    248,662.20/372,993.30 = 155,220.60/x
  3. Step 3: Cross multiply
    248,662.20x = 372,993.30 × 155,220.60
  4. Step 4: Simplify right side
    248,662.20x = 57,896,243,821.98
  5. Step 5: Solve for x
    x = 57,896,243,821.98/248,662.20
  6. Step 6: Final answer
    x = 232,830.90

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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.