Home / 320,919,471-442,879,817.94-179,796,642.26

Finding the Fourth Proportional to 320,919,471, 442,879,817.94 and 179,796,642.26

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Solution

The fourth proportional to 320,919,471, 442,879,817.94 and 179,796,642.26 is: 248,125,499.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,919,471 : 442,879,817.94 = 179,796,642.26 : x
  2. Step 2: Convert to fraction form
    320,919,471/442,879,817.94 = 179,796,642.26/x
  3. Step 3: Cross multiply
    320,919,471x = 442,879,817.94 × 179,796,642.26
  4. Step 4: Simplify right side
    320,919,471x = 79,628,304,188,117,712
  5. Step 5: Solve for x
    x = 79,628,304,188,117,712/320,919,471
  6. Step 6: Final answer
    x = 248,125,499.96

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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.