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Finding the Fourth Proportional to 479,963.16, 720,100.30 and 164,422.84

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Solution

The fourth proportional to 479,963.16, 720,100.30 and 164,422.84 is: 246,687.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,963.16 : 720,100.30 = 164,422.84 : x
  2. Step 2: Convert to fraction form
    479,963.16/720,100.30 = 164,422.84/x
  3. Step 3: Cross multiply
    479,963.16x = 720,100.30 × 164,422.84
  4. Step 4: Simplify right side
    479,963.16x = 118,400,936,410.85
  5. Step 5: Solve for x
    x = 118,400,936,410.85/479,963.16
  6. Step 6: Final answer
    x = 246,687.55

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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.