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Finding the Fourth Proportional to 361,364.40, 541,830.60 and 221,223.60

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Solution

The fourth proportional to 361,364.40, 541,830.60 and 221,223.60 is: 331,703.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,364.40 : 541,830.60 = 221,223.60 : x
  2. Step 2: Convert to fraction form
    361,364.40/541,830.60 = 221,223.60/x
  3. Step 3: Cross multiply
    361,364.40x = 541,830.60 × 221,223.60
  4. Step 4: Simplify right side
    361,364.40x = 119,865,715,922.16
  5. Step 5: Solve for x
    x = 119,865,715,922.16/361,364.40
  6. Step 6: Final answer
    x = 331,703.17

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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.