Home / 289,290.64-399,263-161,974.44

Finding the Fourth Proportional to 289,290.64, 399,263 and 161,974.44

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Solution

The fourth proportional to 289,290.64, 399,263 and 161,974.44 is: 223,548.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,290.64 : 399,263 = 161,974.44 : x
  2. Step 2: Convert to fraction form
    289,290.64/399,263 = 161,974.44/x
  3. Step 3: Cross multiply
    289,290.64x = 399,263 × 161,974.44
  4. Step 4: Simplify right side
    289,290.64x = 64,670,400,837.72
  5. Step 5: Solve for x
    x = 64,670,400,837.72/289,290.64
  6. Step 6: Final answer
    x = 223,548.20

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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.