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Finding the Fourth Proportional to 379,451.56, 523,622.55 and 209,674.75

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Solution

The fourth proportional to 379,451.56, 523,622.55 and 209,674.75 is: 289,339.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,451.56 : 523,622.55 = 209,674.75 : x
  2. Step 2: Convert to fraction form
    379,451.56/523,622.55 = 209,674.75/x
  3. Step 3: Cross multiply
    379,451.56x = 523,622.55 × 209,674.75
  4. Step 4: Simplify right side
    379,451.56x = 109,790,427,265.61
  5. Step 5: Solve for x
    x = 109,790,427,265.61/379,451.56
  6. Step 6: Final answer
    x = 289,339.77

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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.