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Finding the Fourth Proportional to 353,106, 529,659 and 90,450

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Solution

The fourth proportional to 353,106, 529,659 and 90,450 is: 135,675

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,106 : 529,659 = 90,450 : x
  2. Step 2: Convert to fraction form
    353,106/529,659 = 90,450/x
  3. Step 3: Cross multiply
    353,106x = 529,659 × 90,450
  4. Step 4: Simplify right side
    353,106x = 47,907,656,550
  5. Step 5: Solve for x
    x = 47,907,656,550/353,106
  6. Step 6: Final answer
    x = 135,675

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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.