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Finding the Fourth Proportional to 300,938.60, 451,486.20 and 87,701.64

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Solution

The fourth proportional to 300,938.60, 451,486.20 and 87,701.64 is: 131,575.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,938.60 : 451,486.20 = 87,701.64 : x
  2. Step 2: Convert to fraction form
    300,938.60/451,486.20 = 87,701.64/x
  3. Step 3: Cross multiply
    300,938.60x = 451,486.20 × 87,701.64
  4. Step 4: Simplify right side
    300,938.60x = 39,596,080,177.37
  5. Step 5: Solve for x
    x = 39,596,080,177.37/300,938.60
  6. Step 6: Final answer
    x = 131,575.28

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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.