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Finding the Fourth Proportional to 406,999.69, 561,659.57 and 225,739.37

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Solution

The fourth proportional to 406,999.69, 561,659.57 and 225,739.37 is: 311,520.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,999.69 : 561,659.57 = 225,739.37 : x
  2. Step 2: Convert to fraction form
    406,999.69/561,659.57 = 225,739.37/x
  3. Step 3: Cross multiply
    406,999.69x = 561,659.57 × 225,739.37
  4. Step 4: Simplify right side
    406,999.69x = 126,788,678,608.25
  5. Step 5: Solve for x
    x = 126,788,678,608.25/406,999.69
  6. Step 6: Final answer
    x = 311,520.33

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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.