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Finding the Fourth Proportional to 393,333.44, 589,553.64 and 345,856.64

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Solution

The fourth proportional to 393,333.44, 589,553.64 and 345,856.64 is: 518,392.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,333.44 : 589,553.64 = 345,856.64 : x
  2. Step 2: Convert to fraction form
    393,333.44/589,553.64 = 345,856.64/x
  3. Step 3: Cross multiply
    393,333.44x = 589,553.64 × 345,856.64
  4. Step 4: Simplify right side
    393,333.44x = 203,901,038,082.40
  5. Step 5: Solve for x
    x = 203,901,038,082.40/393,333.44
  6. Step 6: Final answer
    x = 518,392.34

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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.