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Finding the Fourth Proportional to 245,999.20, 368,768.40 and 192,661.60

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Solution

The fourth proportional to 245,999.20, 368,768.40 and 192,661.60 is: 288,811.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,999.20 : 368,768.40 = 192,661.60 : x
  2. Step 2: Convert to fraction form
    245,999.20/368,768.40 = 192,661.60/x
  3. Step 3: Cross multiply
    245,999.20x = 368,768.40 × 192,661.60
  4. Step 4: Simplify right side
    245,999.20x = 71,047,509,973.44
  5. Step 5: Solve for x
    x = 71,047,509,973.44/245,999.20
  6. Step 6: Final answer
    x = 288,811.96

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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.