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Finding the Fourth Proportional to 361,320.40, 541,764.60 and 221,179.60

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Solution

The fourth proportional to 361,320.40, 541,764.60 and 221,179.60 is: 331,637.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,320.40 : 541,764.60 = 221,179.60 : x
  2. Step 2: Convert to fraction form
    361,320.40/541,764.60 = 221,179.60/x
  3. Step 3: Cross multiply
    361,320.40x = 541,764.60 × 221,179.60
  4. Step 4: Simplify right side
    361,320.40x = 119,827,277,522.16
  5. Step 5: Solve for x
    x = 119,827,277,522.16/361,320.40
  6. Step 6: Final answer
    x = 331,637.18

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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.