Home / 389,424.26-537,405.19-219,658.39

Finding the Fourth Proportional to 389,424.26, 537,405.19 and 219,658.39

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Solution

The fourth proportional to 389,424.26, 537,405.19 and 219,658.39 is: 303,128.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,424.26 : 537,405.19 = 219,658.39 : x
  2. Step 2: Convert to fraction form
    389,424.26/537,405.19 = 219,658.39/x
  3. Step 3: Cross multiply
    389,424.26x = 537,405.19 × 219,658.39
  4. Step 4: Simplify right side
    389,424.26x = 118,045,558,813.04
  5. Step 5: Solve for x
    x = 118,045,558,813.04/389,424.26
  6. Step 6: Final answer
    x = 303,128.42

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1.5x scale

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.