Home / 208,311.47-312,483.40-68,084.27

Finding the Fourth Proportional to 208,311.47, 312,483.40 and 68,084.27

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Solution

The fourth proportional to 208,311.47, 312,483.40 and 68,084.27 is: 102,131.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,311.47 : 312,483.40 = 68,084.27 : x
  2. Step 2: Convert to fraction form
    208,311.47/312,483.40 = 68,084.27/x
  3. Step 3: Cross multiply
    208,311.47x = 312,483.40 × 68,084.27
  4. Step 4: Simplify right side
    208,311.47x = 21,275,204,176.12
  5. Step 5: Solve for x
    x = 21,275,204,176.12/208,311.47
  6. Step 6: Final answer
    x = 102,131.70

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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.