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Finding the Fourth Proportional to 286,866.44, 395,845.30 and 159,521.48

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Solution

The fourth proportional to 286,866.44, 395,845.30 and 159,521.48 is: 220,122.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,866.44 : 395,845.30 = 159,521.48 : x
  2. Step 2: Convert to fraction form
    286,866.44/395,845.30 = 159,521.48/x
  3. Step 3: Cross multiply
    286,866.44x = 395,845.30 × 159,521.48
  4. Step 4: Simplify right side
    286,866.44x = 63,145,828,107.04
  5. Step 5: Solve for x
    x = 63,145,828,107.04/286,866.44
  6. Step 6: Final answer
    x = 220,122.74

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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.