Home / 386,214.14-579,481.13-208,512.20

Finding the Fourth Proportional to 386,214.14, 579,481.13 and 208,512.20

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Solution

The fourth proportional to 386,214.14, 579,481.13 and 208,512.20 is: 312,854.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,214.14 : 579,481.13 = 208,512.20 : x
  2. Step 2: Convert to fraction form
    386,214.14/579,481.13 = 208,512.20/x
  3. Step 3: Cross multiply
    386,214.14x = 579,481.13 × 208,512.20
  4. Step 4: Simplify right side
    386,214.14x = 120,828,885,274.79
  5. Step 5: Solve for x
    x = 120,828,885,274.79/386,214.14
  6. Step 6: Final answer
    x = 312,854.64

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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.