Home / 379,211.22-523,293.21-209,441.70

Finding the Fourth Proportional to 379,211.22, 523,293.21 and 209,441.70

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Solution

The fourth proportional to 379,211.22, 523,293.21 and 209,441.70 is: 289,019.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,211.22 : 523,293.21 = 209,441.70 : x
  2. Step 2: Convert to fraction form
    379,211.22/523,293.21 = 209,441.70/x
  3. Step 3: Cross multiply
    379,211.22x = 523,293.21 × 209,441.70
  4. Step 4: Simplify right side
    379,211.22x = 109,599,419,500.86
  5. Step 5: Solve for x
    x = 109,599,419,500.86/379,211.22
  6. Step 6: Final answer
    x = 289,019.45

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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.