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Finding the Fourth Proportional to 286,208.78, 394,952.67 and 158,876.17

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Solution

The fourth proportional to 286,208.78, 394,952.67 and 158,876.17 is: 219,240.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,208.78 : 394,952.67 = 158,876.17 : x
  2. Step 2: Convert to fraction form
    286,208.78/394,952.67 = 158,876.17/x
  3. Step 3: Cross multiply
    286,208.78x = 394,952.67 × 158,876.17
  4. Step 4: Simplify right side
    286,208.78x = 62,748,567,540.87
  5. Step 5: Solve for x
    x = 62,748,567,540.87/286,208.78
  6. Step 6: Final answer
    x = 219,240.54

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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.