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Finding the Fourth Proportional to 276,640.40, 414,960.60 and 99,347.60

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Solution

The fourth proportional to 276,640.40, 414,960.60 and 99,347.60 is: 149,021.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,640.40 : 414,960.60 = 99,347.60 : x
  2. Step 2: Convert to fraction form
    276,640.40/414,960.60 = 99,347.60/x
  3. Step 3: Cross multiply
    276,640.40x = 414,960.60 × 99,347.60
  4. Step 4: Simplify right side
    276,640.40x = 41,225,339,704.56
  5. Step 5: Solve for x
    x = 41,225,339,704.56/276,640.40
  6. Step 6: Final answer
    x = 149,021.40

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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.