Home / 263,943.60-395,911.80-86,456.40

Finding the Fourth Proportional to 263,943.60, 395,911.80 and 86,456.40

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Solution

The fourth proportional to 263,943.60, 395,911.80 and 86,456.40 is: 129,683.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,943.60 : 395,911.80 = 86,456.40 : x
  2. Step 2: Convert to fraction form
    263,943.60/395,911.80 = 86,456.40/x
  3. Step 3: Cross multiply
    263,943.60x = 395,911.80 × 86,456.40
  4. Step 4: Simplify right side
    263,943.60x = 34,229,108,945.52
  5. Step 5: Solve for x
    x = 34,229,108,945.52/263,943.60
  6. Step 6: Final answer
    x = 129,683.42

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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.