Home / 386,371.60-579,287.40-228,518.80

Finding the Fourth Proportional to 386,371.60, 579,287.40 and 228,518.80

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Solution

The fourth proportional to 386,371.60, 579,287.40 and 228,518.80 is: 342,618.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,371.60 : 579,287.40 = 228,518.80 : x
  2. Step 2: Convert to fraction form
    386,371.60/579,287.40 = 228,518.80/x
  3. Step 3: Cross multiply
    386,371.60x = 579,287.40 × 228,518.80
  4. Step 4: Simplify right side
    386,371.60x = 132,378,061,503.12
  5. Step 5: Solve for x
    x = 132,378,061,503.12/386,371.60
  6. Step 6: Final answer
    x = 342,618.51

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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.