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Finding the Fourth Proportional to 286,253.64, 428,902.62 and 126,090.96

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Solution

The fourth proportional to 286,253.64, 428,902.62 and 126,090.96 is: 188,925.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,253.64 : 428,902.62 = 126,090.96 : x
  2. Step 2: Convert to fraction form
    286,253.64/428,902.62 = 126,090.96/x
  3. Step 3: Cross multiply
    286,253.64x = 428,902.62 × 126,090.96
  4. Step 4: Simplify right side
    286,253.64x = 54,080,743,102.32
  5. Step 5: Solve for x
    x = 54,080,743,102.32/286,253.64
  6. Step 6: Final answer
    x = 188,925.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.