Home / 386,543.40-579,786.30-161,845.80

Finding the Fourth Proportional to 386,543.40, 579,786.30 and 161,845.80

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Solution

The fourth proportional to 386,543.40, 579,786.30 and 161,845.80 is: 242,756.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,543.40 : 579,786.30 = 161,845.80 : x
  2. Step 2: Convert to fraction form
    386,543.40/579,786.30 = 161,845.80/x
  3. Step 3: Cross multiply
    386,543.40x = 579,786.30 × 161,845.80
  4. Step 4: Simplify right side
    386,543.40x = 93,835,977,552.54
  5. Step 5: Solve for x
    x = 93,835,977,552.54/386,543.40
  6. Step 6: Final answer
    x = 242,756.64

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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.