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Finding the Fourth Proportional to 161,415.57, 222,620.84 and 143,279.54

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Solution

The fourth proportional to 161,415.57, 222,620.84 and 143,279.54 is: 197,608.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,415.57 : 222,620.84 = 143,279.54 : x
  2. Step 2: Convert to fraction form
    161,415.57/222,620.84 = 143,279.54/x
  3. Step 3: Cross multiply
    161,415.57x = 222,620.84 × 143,279.54
  4. Step 4: Simplify right side
    161,415.57x = 31,897,009,720.11
  5. Step 5: Solve for x
    x = 31,897,009,720.11/161,415.57
  6. Step 6: Final answer
    x = 197,608.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.