Home / 286,112.36-394,827.54-158,784.68

Finding the Fourth Proportional to 286,112.36, 394,827.54 and 158,784.68

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Solution

The fourth proportional to 286,112.36, 394,827.54 and 158,784.68 is: 219,118.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,112.36 : 394,827.54 = 158,784.68 : x
  2. Step 2: Convert to fraction form
    286,112.36/394,827.54 = 158,784.68/x
  3. Step 3: Cross multiply
    286,112.36x = 394,827.54 × 158,784.68
  4. Step 4: Simplify right side
    286,112.36x = 62,692,564,594.09
  5. Step 5: Solve for x
    x = 62,692,564,594.09/286,112.36
  6. Step 6: Final answer
    x = 219,118.69

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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.