Home / 405,780,100.12-559,977,623.56-220,141,115.80

Finding the Fourth Proportional to 405,780,100.12, 559,977,623.56 and 220,141,115.80

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Solution

The fourth proportional to 405,780,100.12, 559,977,623.56 and 220,141,115.80 is: 303,795,328.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,780,100.12 : 559,977,623.56 = 220,141,115.80 : x
  2. Step 2: Convert to fraction form
    405,780,100.12/559,977,623.56 = 220,141,115.80/x
  3. Step 3: Cross multiply
    405,780,100.12x = 559,977,623.56 × 220,141,115.80
  4. Step 4: Simplify right side
    405,780,100.12x = 123,274,098,873,530,768
  5. Step 5: Solve for x
    x = 123,274,098,873,530,768/405,780,100.12
  6. Step 6: Final answer
    x = 303,795,328.64

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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.