Home / 286,223.60-394,716.56-208,628.72

Finding the Fourth Proportional to 286,223.60, 394,716.56 and 208,628.72

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Solution

The fourth proportional to 286,223.60, 394,716.56 and 208,628.72 is: 287,709.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,223.60 : 394,716.56 = 208,628.72 : x
  2. Step 2: Convert to fraction form
    286,223.60/394,716.56 = 208,628.72/x
  3. Step 3: Cross multiply
    286,223.60x = 394,716.56 × 208,628.72
  4. Step 4: Simplify right side
    286,223.60x = 82,349,210,675.60
  5. Step 5: Solve for x
    x = 82,349,210,675.60/286,223.60
  6. Step 6: Final answer
    x = 287,709.37

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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.