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Finding the Fourth Proportional to 221,911.94, 306,243.87 and 134,698.04

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Solution

The fourth proportional to 221,911.94, 306,243.87 and 134,698.04 is: 185,886.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,911.94 : 306,243.87 = 134,698.04 : x
  2. Step 2: Convert to fraction form
    221,911.94/306,243.87 = 134,698.04/x
  3. Step 3: Cross multiply
    221,911.94x = 306,243.87 × 134,698.04
  4. Step 4: Simplify right side
    221,911.94x = 41,250,449,051.01
  5. Step 5: Solve for x
    x = 41,250,449,051.01/221,911.94
  6. Step 6: Final answer
    x = 185,886.57

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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.