Home / 526,255.20-789,390-171,270.72

Finding the Fourth Proportional to 526,255.20, 789,390 and 171,270.72

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Solution

The fourth proportional to 526,255.20, 789,390 and 171,270.72 is: 256,908.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,255.20 : 789,390 = 171,270.72 : x
  2. Step 2: Convert to fraction form
    526,255.20/789,390 = 171,270.72/x
  3. Step 3: Cross multiply
    526,255.20x = 789,390 × 171,270.72
  4. Step 4: Simplify right side
    526,255.20x = 135,199,393,660.80
  5. Step 5: Solve for x
    x = 135,199,393,660.80/526,255.20
  6. Step 6: Final answer
    x = 256,908.42

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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.