Home / 382,916.88-528,415.92-213,147.36

Finding the Fourth Proportional to 382,916.88, 528,415.92 and 213,147.36

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Solution

The fourth proportional to 382,916.88, 528,415.92 and 213,147.36 is: 294,138.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,916.88 : 528,415.92 = 213,147.36 : x
  2. Step 2: Convert to fraction form
    382,916.88/528,415.92 = 213,147.36/x
  3. Step 3: Cross multiply
    382,916.88x = 528,415.92 × 213,147.36
  4. Step 4: Simplify right side
    382,916.88x = 112,630,458,329.97
  5. Step 5: Solve for x
    x = 112,630,458,329.97/382,916.88
  6. Step 6: Final answer
    x = 294,138.14

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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.