Home / 871,255.20-1,306,947.60-310,216.80

Finding the Fourth Proportional to 871,255.20, 1,306,947.60 and 310,216.80

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Solution

The fourth proportional to 871,255.20, 1,306,947.60 and 310,216.80 is: 465,348.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,255.20 : 1,306,947.60 = 310,216.80 : x
  2. Step 2: Convert to fraction form
    871,255.20/1,306,947.60 = 310,216.80/x
  3. Step 3: Cross multiply
    871,255.20x = 1,306,947.60 × 310,216.80
  4. Step 4: Simplify right side
    871,255.20x = 405,437,102,239.68
  5. Step 5: Solve for x
    x = 405,437,102,239.68/871,255.20
  6. Step 6: Final answer
    x = 465,348.27

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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.