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Finding the Fourth Proportional to 268,682.61, 370,782.03 and 147,821.31

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Solution

The fourth proportional to 268,682.61, 370,782.03 and 147,821.31 is: 203,993.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,682.61 : 370,782.03 = 147,821.31 : x
  2. Step 2: Convert to fraction form
    268,682.61/370,782.03 = 147,821.31/x
  3. Step 3: Cross multiply
    268,682.61x = 370,782.03 × 147,821.31
  4. Step 4: Simplify right side
    268,682.61x = 54,809,485,399.06
  5. Step 5: Solve for x
    x = 54,809,485,399.06/268,682.61
  6. Step 6: Final answer
    x = 203,993.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.