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Finding the Fourth Proportional to 320,573.80, 442,393.65 and 177,338.97

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Solution

The fourth proportional to 320,573.80, 442,393.65 and 177,338.97 is: 244,728.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,573.80 : 442,393.65 = 177,338.97 : x
  2. Step 2: Convert to fraction form
    320,573.80/442,393.65 = 177,338.97/x
  3. Step 3: Cross multiply
    320,573.80x = 442,393.65 × 177,338.97
  4. Step 4: Simplify right side
    320,573.80x = 78,453,634,225.54
  5. Step 5: Solve for x
    x = 78,453,634,225.54/320,573.80
  6. Step 6: Final answer
    x = 244,728.78

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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.