Home / 304,968,578.78-420,859,269.24-165,739,369.28

Finding the Fourth Proportional to 304,968,578.78, 420,859,269.24 and 165,739,369.28

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Solution

The fourth proportional to 304,968,578.78, 420,859,269.24 and 165,739,369.28 is: 228,721,759.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,968,578.78 : 420,859,269.24 = 165,739,369.28 : x
  2. Step 2: Convert to fraction form
    304,968,578.78/420,859,269.24 = 165,739,369.28/x
  3. Step 3: Cross multiply
    304,968,578.78x = 420,859,269.24 × 165,739,369.28
  4. Step 4: Simplify right side
    304,968,578.78x = 69,752,949,839,479,304
  5. Step 5: Solve for x
    x = 69,752,949,839,479,304/304,968,578.78
  6. Step 6: Final answer
    x = 228,721,759.20

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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.