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Finding the Fourth Proportional to 393,481.60, 590,222.40 and 168,803.80

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Solution

The fourth proportional to 393,481.60, 590,222.40 and 168,803.80 is: 253,205.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,481.60 : 590,222.40 = 168,803.80 : x
  2. Step 2: Convert to fraction form
    393,481.60/590,222.40 = 168,803.80/x
  3. Step 3: Cross multiply
    393,481.60x = 590,222.40 × 168,803.80
  4. Step 4: Simplify right side
    393,481.60x = 99,631,783,965.12
  5. Step 5: Solve for x
    x = 99,631,783,965.12/393,481.60
  6. Step 6: Final answer
    x = 253,205.70

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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.