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Finding the Fourth Proportional to 406,987.80, 610,481.70 and 111,499.80

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Solution

The fourth proportional to 406,987.80, 610,481.70 and 111,499.80 is: 167,249.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,987.80 : 610,481.70 = 111,499.80 : x
  2. Step 2: Convert to fraction form
    406,987.80/610,481.70 = 111,499.80/x
  3. Step 3: Cross multiply
    406,987.80x = 610,481.70 × 111,499.80
  4. Step 4: Simplify right side
    406,987.80x = 68,068,587,453.66
  5. Step 5: Solve for x
    x = 68,068,587,453.66/406,987.80
  6. Step 6: Final answer
    x = 167,249.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.