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Finding the Fourth Proportional to 309,612.45, 426,869.67 and 200,524.06

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Solution

The fourth proportional to 309,612.45, 426,869.67 and 200,524.06 is: 276,467.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,612.45 : 426,869.67 = 200,524.06 : x
  2. Step 2: Convert to fraction form
    309,612.45/426,869.67 = 200,524.06/x
  3. Step 3: Cross multiply
    309,612.45x = 426,869.67 × 200,524.06
  4. Step 4: Simplify right side
    309,612.45x = 85,597,637,639.70
  5. Step 5: Solve for x
    x = 85,597,637,639.70/309,612.45
  6. Step 6: Final answer
    x = 276,467.04

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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.