Home / 286,228.10-394,722.77-208,633.22

Finding the Fourth Proportional to 286,228.10, 394,722.77 and 208,633.22

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Solution

The fourth proportional to 286,228.10, 394,722.77 and 208,633.22 is: 287,715.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,228.10 : 394,722.77 = 208,633.22 : x
  2. Step 2: Convert to fraction form
    286,228.10/394,722.77 = 208,633.22/x
  3. Step 3: Cross multiply
    286,228.10x = 394,722.77 × 208,633.22
  4. Step 4: Simplify right side
    286,228.10x = 82,352,282,512.42
  5. Step 5: Solve for x
    x = 82,352,282,512.42/286,228.10
  6. Step 6: Final answer
    x = 287,715.58

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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.