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Finding the Fourth Proportional to 286,878.36, 395,853.66 and 159,529.44

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Solution

The fourth proportional to 286,878.36, 395,853.66 and 159,529.44 is: 220,129.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,878.36 : 395,853.66 = 159,529.44 : x
  2. Step 2: Convert to fraction form
    286,878.36/395,853.66 = 159,529.44/x
  3. Step 3: Cross multiply
    286,878.36x = 395,853.66 × 159,529.44
  4. Step 4: Simplify right side
    286,878.36x = 63,150,312,701.75
  5. Step 5: Solve for x
    x = 63,150,312,701.75/286,878.36
  6. Step 6: Final answer
    x = 220,129.23

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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.