Home / 279,138.14-418,548.63-190,499.02

Finding the Fourth Proportional to 279,138.14, 418,548.63 and 190,499.02

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Solution

The fourth proportional to 279,138.14, 418,548.63 and 190,499.02 is: 285,640.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,138.14 : 418,548.63 = 190,499.02 : x
  2. Step 2: Convert to fraction form
    279,138.14/418,548.63 = 190,499.02/x
  3. Step 3: Cross multiply
    279,138.14x = 418,548.63 × 190,499.02
  4. Step 4: Simplify right side
    279,138.14x = 79,733,103,837.34
  5. Step 5: Solve for x
    x = 79,733,103,837.34/279,138.14
  6. Step 6: Final answer
    x = 285,640.31

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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.