Home / 386,119.20-579,178.80-208,972.20

Finding the Fourth Proportional to 386,119.20, 579,178.80 and 208,972.20

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Solution

The fourth proportional to 386,119.20, 579,178.80 and 208,972.20 is: 313,458.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,119.20 : 579,178.80 = 208,972.20 : x
  2. Step 2: Convert to fraction form
    386,119.20/579,178.80 = 208,972.20/x
  3. Step 3: Cross multiply
    386,119.20x = 579,178.80 × 208,972.20
  4. Step 4: Simplify right side
    386,119.20x = 121,032,268,029.36
  5. Step 5: Solve for x
    x = 121,032,268,029.36/386,119.20
  6. Step 6: Final answer
    x = 313,458.30

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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.