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Finding the Fourth Proportional to 286,873.12, 395,968.28 and 191,379.58

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Solution

The fourth proportional to 286,873.12, 395,968.28 and 191,379.58 is: 264,159.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,873.12 : 395,968.28 = 191,379.58 : x
  2. Step 2: Convert to fraction form
    286,873.12/395,968.28 = 191,379.58/x
  3. Step 3: Cross multiply
    286,873.12x = 395,968.28 × 191,379.58
  4. Step 4: Simplify right side
    286,873.12x = 75,780,243,119.72
  5. Step 5: Solve for x
    x = 75,780,243,119.72/286,873.12
  6. Step 6: Final answer
    x = 264,159.44

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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.