Home / 215,021.58-296,745.18-128,984.19

Finding the Fourth Proportional to 215,021.58, 296,745.18 and 128,984.19

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Solution

The fourth proportional to 215,021.58, 296,745.18 and 128,984.19 is: 178,007.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,021.58 : 296,745.18 = 128,984.19 : x
  2. Step 2: Convert to fraction form
    215,021.58/296,745.18 = 128,984.19/x
  3. Step 3: Cross multiply
    215,021.58x = 296,745.18 × 128,984.19
  4. Step 4: Simplify right side
    215,021.58x = 38,275,436,678.70
  5. Step 5: Solve for x
    x = 38,275,436,678.70/215,021.58
  6. Step 6: Final answer
    x = 178,007.42

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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.