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Finding the Fourth Proportional to 286,339.40, 395,161.50 and 159,015.56

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Solution

The fourth proportional to 286,339.40, 395,161.50 and 159,015.56 is: 219,448.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,339.40 : 395,161.50 = 159,015.56 : x
  2. Step 2: Convert to fraction form
    286,339.40/395,161.50 = 159,015.56/x
  3. Step 3: Cross multiply
    286,339.40x = 395,161.50 × 159,015.56
  4. Step 4: Simplify right side
    286,339.40x = 62,836,827,212.94
  5. Step 5: Solve for x
    x = 62,836,827,212.94/286,339.40
  6. Step 6: Final answer
    x = 219,448.76

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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.