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Finding the Fourth Proportional to 291,145.80, 401,780.34 and 163,821.39

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Solution

The fourth proportional to 291,145.80, 401,780.34 and 163,821.39 is: 226,073.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,145.80 : 401,780.34 = 163,821.39 : x
  2. Step 2: Convert to fraction form
    291,145.80/401,780.34 = 163,821.39/x
  3. Step 3: Cross multiply
    291,145.80x = 401,780.34 × 163,821.39
  4. Step 4: Simplify right side
    291,145.80x = 65,820,213,773.47
  5. Step 5: Solve for x
    x = 65,820,213,773.47/291,145.80
  6. Step 6: Final answer
    x = 226,073.03

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