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Finding the Fourth Proportional to 406,944.20, 610,406.70 and 111,456.20

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Solution

The fourth proportional to 406,944.20, 610,406.70 and 111,456.20 is: 167,181.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,944.20 : 610,406.70 = 111,456.20 : x
  2. Step 2: Convert to fraction form
    406,944.20/610,406.70 = 111,456.20/x
  3. Step 3: Cross multiply
    406,944.20x = 610,406.70 × 111,456.20
  4. Step 4: Simplify right side
    406,944.20x = 68,033,611,236.54
  5. Step 5: Solve for x
    x = 68,033,611,236.54/406,944.20
  6. Step 6: Final answer
    x = 167,181.67

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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.