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Finding the Fourth Proportional to 447,879.78, 671,914.44 and 148,343.40

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Solution

The fourth proportional to 447,879.78, 671,914.44 and 148,343.40 is: 222,546.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,879.78 : 671,914.44 = 148,343.40 : x
  2. Step 2: Convert to fraction form
    447,879.78/671,914.44 = 148,343.40/x
  3. Step 3: Cross multiply
    447,879.78x = 671,914.44 × 148,343.40
  4. Step 4: Simplify right side
    447,879.78x = 99,674,072,538.70
  5. Step 5: Solve for x
    x = 99,674,072,538.70/447,879.78
  6. Step 6: Final answer
    x = 222,546.49

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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.