Home / 386,308.68-579,629.52-208,940.55

Finding the Fourth Proportional to 386,308.68, 579,629.52 and 208,940.55

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Solution

The fourth proportional to 386,308.68, 579,629.52 and 208,940.55 is: 313,500.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,308.68 : 579,629.52 = 208,940.55 : x
  2. Step 2: Convert to fraction form
    386,308.68/579,629.52 = 208,940.55/x
  3. Step 3: Cross multiply
    386,308.68x = 579,629.52 × 208,940.55
  4. Step 4: Simplify right side
    386,308.68x = 121,108,110,705.04
  5. Step 5: Solve for x
    x = 121,108,110,705.04/386,308.68
  6. Step 6: Final answer
    x = 313,500.88

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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.