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Finding the Fourth Proportional to 372,099.78, 513,435.44 and 219,168.42

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Solution

The fourth proportional to 372,099.78, 513,435.44 and 219,168.42 is: 302,415.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,099.78 : 513,435.44 = 219,168.42 : x
  2. Step 2: Convert to fraction form
    372,099.78/513,435.44 = 219,168.42/x
  3. Step 3: Cross multiply
    372,099.78x = 513,435.44 × 219,168.42
  4. Step 4: Simplify right side
    372,099.78x = 112,528,831,589.63
  5. Step 5: Solve for x
    x = 112,528,831,589.63/372,099.78
  6. Step 6: Final answer
    x = 302,415.75

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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.