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Finding the Fourth Proportional to 484,758.32, 668,978.22 and 269,912.90

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Solution

The fourth proportional to 484,758.32, 668,978.22 and 269,912.90 is: 372,486.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,758.32 : 668,978.22 = 269,912.90 : x
  2. Step 2: Convert to fraction form
    484,758.32/668,978.22 = 269,912.90/x
  3. Step 3: Cross multiply
    484,758.32x = 668,978.22 × 269,912.90
  4. Step 4: Simplify right side
    484,758.32x = 180,565,848,052.15
  5. Step 5: Solve for x
    x = 180,565,848,052.15/484,758.32
  6. Step 6: Final answer
    x = 372,486.33

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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.