Home / 405,885,172.76-560,123,074.61-220,246,188.45

Finding the Fourth Proportional to 405,885,172.76, 560,123,074.61 and 220,246,188.45

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Solution

The fourth proportional to 405,885,172.76, 560,123,074.61 and 220,246,188.45 is: 303,940,573.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,885,172.76 : 560,123,074.61 = 220,246,188.45 : x
  2. Step 2: Convert to fraction form
    405,885,172.76/560,123,074.61 = 220,246,188.45/x
  3. Step 3: Cross multiply
    405,885,172.76x = 560,123,074.61 × 220,246,188.45
  4. Step 4: Simplify right side
    405,885,172.76x = 123,364,972,244,646,240
  5. Step 5: Solve for x
    x = 123,364,972,244,646,240/405,885,172.76
  6. Step 6: Final answer
    x = 303,940,573.65

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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.