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Finding the Fourth Proportional to 282,344.97, 389,636.73 and 155,028.77

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Solution

The fourth proportional to 282,344.97, 389,636.73 and 155,028.77 is: 213,940.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,344.97 : 389,636.73 = 155,028.77 : x
  2. Step 2: Convert to fraction form
    282,344.97/389,636.73 = 155,028.77/x
  3. Step 3: Cross multiply
    282,344.97x = 389,636.73 × 155,028.77
  4. Step 4: Simplify right side
    282,344.97x = 60,404,900,275.39
  5. Step 5: Solve for x
    x = 60,404,900,275.39/282,344.97
  6. Step 6: Final answer
    x = 213,940.06

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1.5x scale

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.