Home / 386,578.80-579,868.20-162,192.60

Finding the Fourth Proportional to 386,578.80, 579,868.20 and 162,192.60

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Solution

The fourth proportional to 386,578.80, 579,868.20 and 162,192.60 is: 243,288.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,578.80 : 579,868.20 = 162,192.60 : x
  2. Step 2: Convert to fraction form
    386,578.80/579,868.20 = 162,192.60/x
  3. Step 3: Cross multiply
    386,578.80x = 579,868.20 × 162,192.60
  4. Step 4: Simplify right side
    386,578.80x = 94,050,331,015.32
  5. Step 5: Solve for x
    x = 94,050,331,015.32/386,578.80
  6. Step 6: Final answer
    x = 243,288.90

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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.