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Finding the Fourth Proportional to 286,361.85, 395,180.28 and 159,037.45

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Solution

The fourth proportional to 286,361.85, 395,180.28 and 159,037.45 is: 219,472.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,361.85 : 395,180.28 = 159,037.45 : x
  2. Step 2: Convert to fraction form
    286,361.85/395,180.28 = 159,037.45/x
  3. Step 3: Cross multiply
    286,361.85x = 395,180.28 × 159,037.45
  4. Step 4: Simplify right side
    286,361.85x = 62,848,464,021.49
  5. Step 5: Solve for x
    x = 62,848,464,021.49/286,361.85
  6. Step 6: Final answer
    x = 219,472.20

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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.