Home / 208,291.47-312,226.83-82,020.35

Finding the Fourth Proportional to 208,291.47, 312,226.83 and 82,020.35

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Solution

The fourth proportional to 208,291.47, 312,226.83 and 82,020.35 is: 122,947.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,291.47 : 312,226.83 = 82,020.35 : x
  2. Step 2: Convert to fraction form
    208,291.47/312,226.83 = 82,020.35/x
  3. Step 3: Cross multiply
    208,291.47x = 312,226.83 × 82,020.35
  4. Step 4: Simplify right side
    208,291.47x = 25,608,952,314.86
  5. Step 5: Solve for x
    x = 25,608,952,314.86/208,291.47
  6. Step 6: Final answer
    x = 122,947.68

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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.