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Finding the Fourth Proportional to 406,621.76, 561,160.50 and 225,329.90

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Solution

The fourth proportional to 406,621.76, 561,160.50 and 225,329.90 is: 310,967.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,621.76 : 561,160.50 = 225,329.90 : x
  2. Step 2: Convert to fraction form
    406,621.76/561,160.50 = 225,329.90/x
  3. Step 3: Cross multiply
    406,621.76x = 561,160.50 × 225,329.90
  4. Step 4: Simplify right side
    406,621.76x = 126,446,239,348.95
  5. Step 5: Solve for x
    x = 126,446,239,348.95/406,621.76
  6. Step 6: Final answer
    x = 310,967.71

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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.