Home / 282,415.38-389,735.73-155,091.87

Finding the Fourth Proportional to 282,415.38, 389,735.73 and 155,091.87

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Solution

The fourth proportional to 282,415.38, 389,735.73 and 155,091.87 is: 214,028.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,415.38 : 389,735.73 = 155,091.87 : x
  2. Step 2: Convert to fraction form
    282,415.38/389,735.73 = 155,091.87/x
  3. Step 3: Cross multiply
    282,415.38x = 389,735.73 × 155,091.87
  4. Step 4: Simplify right side
    282,415.38x = 60,444,843,171.52
  5. Step 5: Solve for x
    x = 60,444,843,171.52/282,415.38
  6. Step 6: Final answer
    x = 214,028.16

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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.