Home / 221,586.80-305,936.04-136,828.40

Finding the Fourth Proportional to 221,586.80, 305,936.04 and 136,828.40

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Solution

The fourth proportional to 221,586.80, 305,936.04 and 136,828.40 is: 188,913.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,586.80 : 305,936.04 = 136,828.40 : x
  2. Step 2: Convert to fraction form
    221,586.80/305,936.04 = 136,828.40/x
  3. Step 3: Cross multiply
    221,586.80x = 305,936.04 × 136,828.40
  4. Step 4: Simplify right side
    221,586.80x = 41,860,738,855.54
  5. Step 5: Solve for x
    x = 41,860,738,855.54/221,586.80
  6. Step 6: Final answer
    x = 188,913.50

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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.