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Finding the Fourth Proportional to 286,775.15, 395,747.30 and 159,449.63

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Solution

The fourth proportional to 286,775.15, 395,747.30 and 159,449.63 is: 220,039.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,775.15 : 395,747.30 = 159,449.63 : x
  2. Step 2: Convert to fraction form
    286,775.15/395,747.30 = 159,449.63/x
  3. Step 3: Cross multiply
    286,775.15x = 395,747.30 × 159,449.63
  4. Step 4: Simplify right side
    286,775.15x = 63,101,758,978.39
  5. Step 5: Solve for x
    x = 63,101,758,978.39/286,775.15
  6. Step 6: Final answer
    x = 220,039.15

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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.