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Finding the Fourth Proportional to 379,618.76, 523,847.50 and 209,839.52

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Solution

The fourth proportional to 379,618.76, 523,847.50 and 209,839.52 is: 289,563.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,618.76 : 523,847.50 = 209,839.52 : x
  2. Step 2: Convert to fraction form
    379,618.76/523,847.50 = 209,839.52/x
  3. Step 3: Cross multiply
    379,618.76x = 523,847.50 × 209,839.52
  4. Step 4: Simplify right side
    379,618.76x = 109,923,907,953.20
  5. Step 5: Solve for x
    x = 109,923,907,953.20/379,618.76
  6. Step 6: Final answer
    x = 289,563.95

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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.