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Finding the Fourth Proportional to 281,914.70, 388,665.93 and 223,963.72

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Solution

The fourth proportional to 281,914.70, 388,665.93 and 223,963.72 is: 308,770.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,914.70 : 388,665.93 = 223,963.72 : x
  2. Step 2: Convert to fraction form
    281,914.70/388,665.93 = 223,963.72/x
  3. Step 3: Cross multiply
    281,914.70x = 388,665.93 × 223,963.72
  4. Step 4: Simplify right side
    281,914.70x = 87,047,068,712.99
  5. Step 5: Solve for x
    x = 87,047,068,712.99/281,914.70
  6. Step 6: Final answer
    x = 308,770.94

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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.