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Finding the Fourth Proportional to 282,366.63, 389,672.24 and 155,042.73

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Solution

The fourth proportional to 282,366.63, 389,672.24 and 155,042.73 is: 213,962.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,366.63 : 389,672.24 = 155,042.73 : x
  2. Step 2: Convert to fraction form
    282,366.63/389,672.24 = 155,042.73/x
  3. Step 3: Cross multiply
    282,366.63x = 389,672.24 × 155,042.73
  4. Step 4: Simplify right side
    282,366.63x = 60,415,847,119.60
  5. Step 5: Solve for x
    x = 60,415,847,119.60/282,366.63
  6. Step 6: Final answer
    x = 213,962.42

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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.