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Finding the Fourth Proportional to 281,366.22, 388,277.64 and 154,039.08

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Solution

The fourth proportional to 281,366.22, 388,277.64 and 154,039.08 is: 212,569.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,366.22 : 388,277.64 = 154,039.08 : x
  2. Step 2: Convert to fraction form
    281,366.22/388,277.64 = 154,039.08/x
  3. Step 3: Cross multiply
    281,366.22x = 388,277.64 × 154,039.08
  4. Step 4: Simplify right side
    281,366.22x = 59,809,930,450.17
  5. Step 5: Solve for x
    x = 59,809,930,450.17/281,366.22
  6. Step 6: Final answer
    x = 212,569.69

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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.