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Finding the Fourth Proportional to 406,722.80, 561,311.08 and 225,491.60

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Solution

The fourth proportional to 406,722.80, 561,311.08 and 225,491.60 is: 311,197.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,722.80 : 561,311.08 = 225,491.60 : x
  2. Step 2: Convert to fraction form
    406,722.80/561,311.08 = 225,491.60/x
  3. Step 3: Cross multiply
    406,722.80x = 561,311.08 × 225,491.60
  4. Step 4: Simplify right side
    406,722.80x = 126,570,933,526.93
  5. Step 5: Solve for x
    x = 126,570,933,526.93/406,722.80
  6. Step 6: Final answer
    x = 311,197.05

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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.