Home / 379,255.20-523,370.88-218,102.64

Finding the Fourth Proportional to 379,255.20, 523,370.88 and 218,102.64

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Solution

The fourth proportional to 379,255.20, 523,370.88 and 218,102.64 is: 300,980.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,255.20 : 523,370.88 = 218,102.64 : x
  2. Step 2: Convert to fraction form
    379,255.20/523,370.88 = 218,102.64/x
  3. Step 3: Cross multiply
    379,255.20x = 523,370.88 × 218,102.64
  4. Step 4: Simplify right side
    379,255.20x = 114,148,570,627.12
  5. Step 5: Solve for x
    x = 114,148,570,627.12/379,255.20
  6. Step 6: Final answer
    x = 300,980.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.