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Finding the Fourth Proportional to 286,775.21, 395,747.39 and 159,449.69

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Solution

The fourth proportional to 286,775.21, 395,747.39 and 159,449.69 is: 220,039.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,775.21 : 395,747.39 = 159,449.69 : x
  2. Step 2: Convert to fraction form
    286,775.21/395,747.39 = 159,449.69/x
  3. Step 3: Cross multiply
    286,775.21x = 395,747.39 × 159,449.69
  4. Step 4: Simplify right side
    286,775.21x = 63,101,797,265.82
  5. Step 5: Solve for x
    x = 63,101,797,265.82/286,775.21
  6. Step 6: Final answer
    x = 220,039.23

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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.