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Finding the Fourth Proportional to 379,620.76, 523,850.26 and 209,841.52

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Solution

The fourth proportional to 379,620.76, 523,850.26 and 209,841.52 is: 289,566.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,620.76 : 523,850.26 = 209,841.52 : x
  2. Step 2: Convert to fraction form
    379,620.76/523,850.26 = 209,841.52/x
  3. Step 3: Cross multiply
    379,620.76x = 523,850.26 × 209,841.52
  4. Step 4: Simplify right side
    379,620.76x = 109,925,534,810.80
  5. Step 5: Solve for x
    x = 109,925,534,810.80/379,620.76
  6. Step 6: Final answer
    x = 289,566.71

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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.