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Finding the Fourth Proportional to 345,879.25, 477,320.66 and 194,976.25

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Solution

The fourth proportional to 345,879.25, 477,320.66 and 194,976.25 is: 269,071.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,879.25 : 477,320.66 = 194,976.25 : x
  2. Step 2: Convert to fraction form
    345,879.25/477,320.66 = 194,976.25/x
  3. Step 3: Cross multiply
    345,879.25x = 477,320.66 × 194,976.25
  4. Step 4: Simplify right side
    345,879.25x = 93,066,191,359.44
  5. Step 5: Solve for x
    x = 93,066,191,359.44/345,879.25
  6. Step 6: Final answer
    x = 269,071.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.