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Finding the Fourth Proportional to 406,675.89, 561,212.80 and 225,399.53

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Solution

The fourth proportional to 406,675.89, 561,212.80 and 225,399.53 is: 311,051.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,675.89 : 561,212.80 = 225,399.53 : x
  2. Step 2: Convert to fraction form
    406,675.89/561,212.80 = 225,399.53/x
  3. Step 3: Cross multiply
    406,675.89x = 561,212.80 × 225,399.53
  4. Step 4: Simplify right side
    406,675.89x = 126,497,102,189.52
  5. Step 5: Solve for x
    x = 126,497,102,189.52/406,675.89
  6. Step 6: Final answer
    x = 311,051.39

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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.