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Finding the Fourth Proportional to 286,364.11, 395,183.39 and 159,039.70

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Solution

The fourth proportional to 286,364.11, 395,183.39 and 159,039.70 is: 219,475.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,364.11 : 395,183.39 = 159,039.70 : x
  2. Step 2: Convert to fraction form
    286,364.11/395,183.39 = 159,039.70/x
  3. Step 3: Cross multiply
    286,364.11x = 395,183.39 × 159,039.70
  4. Step 4: Simplify right side
    286,364.11x = 62,849,845,019.47
  5. Step 5: Solve for x
    x = 62,849,845,019.47/286,364.11
  6. Step 6: Final answer
    x = 219,475.29

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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.