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Finding the Fourth Proportional to 268,682.64, 370,782 and 147,821.28

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Solution

The fourth proportional to 268,682.64, 370,782 and 147,821.28 is: 203,993.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,682.64 : 370,782 = 147,821.28 : x
  2. Step 2: Convert to fraction form
    268,682.64/370,782 = 147,821.28/x
  3. Step 3: Cross multiply
    268,682.64x = 370,782 × 147,821.28
  4. Step 4: Simplify right side
    268,682.64x = 54,809,469,840.96
  5. Step 5: Solve for x
    x = 54,809,469,840.96/268,682.64
  6. Step 6: Final answer
    x = 203,993.34

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1.5x scale

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.