Home / 205,390.20-308,085.30-189,643.80

Finding the Fourth Proportional to 205,390.20, 308,085.30 and 189,643.80

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Solution

The fourth proportional to 205,390.20, 308,085.30 and 189,643.80 is: 284,465.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,390.20 : 308,085.30 = 189,643.80 : x
  2. Step 2: Convert to fraction form
    205,390.20/308,085.30 = 189,643.80/x
  3. Step 3: Cross multiply
    205,390.20x = 308,085.30 × 189,643.80
  4. Step 4: Simplify right side
    205,390.20x = 58,426,467,016.14
  5. Step 5: Solve for x
    x = 58,426,467,016.14/205,390.20
  6. Step 6: Final answer
    x = 284,465.70

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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.