Home / 389,087.46-536,948.91-219,321.54

Finding the Fourth Proportional to 389,087.46, 536,948.91 and 219,321.54

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Solution

The fourth proportional to 389,087.46, 536,948.91 and 219,321.54 is: 302,668.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,087.46 : 536,948.91 = 219,321.54 : x
  2. Step 2: Convert to fraction form
    389,087.46/536,948.91 = 219,321.54/x
  3. Step 3: Cross multiply
    389,087.46x = 536,948.91 × 219,321.54
  4. Step 4: Simplify right side
    389,087.46x = 117,764,461,842.52
  5. Step 5: Solve for x
    x = 117,764,461,842.52/389,087.46
  6. Step 6: Final answer
    x = 302,668.36

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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.