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Finding the Fourth Proportional to 281,880.04, 388,991.64 and 154,555.34

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Solution

The fourth proportional to 281,880.04, 388,991.64 and 154,555.34 is: 213,284.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,880.04 : 388,991.64 = 154,555.34 : x
  2. Step 2: Convert to fraction form
    281,880.04/388,991.64 = 154,555.34/x
  3. Step 3: Cross multiply
    281,880.04x = 388,991.64 × 154,555.34
  4. Step 4: Simplify right side
    281,880.04x = 60,120,735,177.36
  5. Step 5: Solve for x
    x = 60,120,735,177.36/281,880.04
  6. Step 6: Final answer
    x = 213,284.83

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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.