Home / 386,627.60-579,634.20-211,523.60

Finding the Fourth Proportional to 386,627.60, 579,634.20 and 211,523.60

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Solution

The fourth proportional to 386,627.60, 579,634.20 and 211,523.60 is: 317,117.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,627.60 : 579,634.20 = 211,523.60 : x
  2. Step 2: Convert to fraction form
    386,627.60/579,634.20 = 211,523.60/x
  3. Step 3: Cross multiply
    386,627.60x = 579,634.20 × 211,523.60
  4. Step 4: Simplify right side
    386,627.60x = 122,606,312,667.12
  5. Step 5: Solve for x
    x = 122,606,312,667.12/386,627.60
  6. Step 6: Final answer
    x = 317,117.33

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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.