Home / 263,493.21-395,302.79-86,000.54

Finding the Fourth Proportional to 263,493.21, 395,302.79 and 86,000.54

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Solution

The fourth proportional to 263,493.21, 395,302.79 and 86,000.54 is: 129,021.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,493.21 : 395,302.79 = 86,000.54 : x
  2. Step 2: Convert to fraction form
    263,493.21/395,302.79 = 86,000.54/x
  3. Step 3: Cross multiply
    263,493.21x = 395,302.79 × 86,000.54
  4. Step 4: Simplify right side
    263,493.21x = 33,996,254,606.76
  5. Step 5: Solve for x
    x = 33,996,254,606.76/263,493.21
  6. Step 6: Final answer
    x = 129,021.37

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1.5x scale

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.