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Finding the Fourth Proportional to 381,869.80, 573,416.70 and 303,634.60

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Solution

The fourth proportional to 381,869.80, 573,416.70 and 303,634.60 is: 455,938.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,869.80 : 573,416.70 = 303,634.60 : x
  2. Step 2: Convert to fraction form
    381,869.80/573,416.70 = 303,634.60/x
  3. Step 3: Cross multiply
    381,869.80x = 573,416.70 × 303,634.60
  4. Step 4: Simplify right side
    381,869.80x = 174,109,150,337.82
  5. Step 5: Solve for x
    x = 174,109,150,337.82/381,869.80
  6. Step 6: Final answer
    x = 455,938.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.