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Finding the Fourth Proportional to 286,873.36, 395,968.60 and 191,379.80

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Solution

The fourth proportional to 286,873.36, 395,968.60 and 191,379.80 is: 264,159.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,873.36 : 395,968.60 = 191,379.80 : x
  2. Step 2: Convert to fraction form
    286,873.36/395,968.60 = 191,379.80/x
  3. Step 3: Cross multiply
    286,873.36x = 395,968.60 × 191,379.80
  4. Step 4: Simplify right side
    286,873.36x = 75,780,391,474.28
  5. Step 5: Solve for x
    x = 75,780,391,474.28/286,873.36
  6. Step 6: Final answer
    x = 264,159.74

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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.