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Finding the Fourth Proportional to 282,361.38, 389,664.99 and 155,037.48

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Solution

The fourth proportional to 282,361.38, 389,664.99 and 155,037.48 is: 213,955.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,361.38 : 389,664.99 = 155,037.48 : x
  2. Step 2: Convert to fraction form
    282,361.38/389,664.99 = 155,037.48/x
  3. Step 3: Cross multiply
    282,361.38x = 389,664.99 × 155,037.48
  4. Step 4: Simplify right side
    282,361.38x = 60,412,678,093.83
  5. Step 5: Solve for x
    x = 60,412,678,093.83/282,361.38
  6. Step 6: Final answer
    x = 213,955.17

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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.