Home / 386,470.60-579,114.68-206,581.61

Finding the Fourth Proportional to 386,470.60, 579,114.68 and 206,581.61

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Solution

The fourth proportional to 386,470.60, 579,114.68 and 206,581.61 is: 309,556.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,470.60 : 579,114.68 = 206,581.61 : x
  2. Step 2: Convert to fraction form
    386,470.60/579,114.68 = 206,581.61/x
  3. Step 3: Cross multiply
    386,470.60x = 579,114.68 × 206,581.61
  4. Step 4: Simplify right side
    386,470.60x = 119,634,442,969.04
  5. Step 5: Solve for x
    x = 119,634,442,969.04/386,470.60
  6. Step 6: Final answer
    x = 309,556.39

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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.