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Finding the Fourth Proportional to 262,807.20, 393,757.20 and 122,277.60

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Solution

The fourth proportional to 262,807.20, 393,757.20 and 122,277.60 is: 183,205.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,807.20 : 393,757.20 = 122,277.60 : x
  2. Step 2: Convert to fraction form
    262,807.20/393,757.20 = 122,277.60/x
  3. Step 3: Cross multiply
    262,807.20x = 393,757.20 × 122,277.60
  4. Step 4: Simplify right side
    262,807.20x = 48,147,685,398.72
  5. Step 5: Solve for x
    x = 48,147,685,398.72/262,807.20
  6. Step 6: Final answer
    x = 183,205.35

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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.