Home / 286,002.78-394,683.89-158,678.07

Finding the Fourth Proportional to 286,002.78, 394,683.89 and 158,678.07

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Solution

The fourth proportional to 286,002.78, 394,683.89 and 158,678.07 is: 218,975.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,002.78 : 394,683.89 = 158,678.07 : x
  2. Step 2: Convert to fraction form
    286,002.78/394,683.89 = 158,678.07/x
  3. Step 3: Cross multiply
    286,002.78x = 394,683.89 × 158,678.07
  4. Step 4: Simplify right side
    286,002.78x = 62,627,677,131.90
  5. Step 5: Solve for x
    x = 62,627,677,131.90/286,002.78
  6. Step 6: Final answer
    x = 218,975.76

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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.