Home / 386,511.40-579,738.30-161,813.80

Finding the Fourth Proportional to 386,511.40, 579,738.30 and 161,813.80

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Solution

The fourth proportional to 386,511.40, 579,738.30 and 161,813.80 is: 242,708.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,511.40 : 579,738.30 = 161,813.80 : x
  2. Step 2: Convert to fraction form
    386,511.40/579,738.30 = 161,813.80/x
  3. Step 3: Cross multiply
    386,511.40x = 579,738.30 × 161,813.80
  4. Step 4: Simplify right side
    386,511.40x = 93,809,657,328.54
  5. Step 5: Solve for x
    x = 93,809,657,328.54/386,511.40
  6. Step 6: Final answer
    x = 242,708.64

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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.