Home / 399,362,669.33-551,141,772.82-223,154,942.09

Finding the Fourth Proportional to 399,362,669.33, 551,141,772.82 and 223,154,942.09

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Solution

The fourth proportional to 399,362,669.33, 551,141,772.82 and 223,154,942.09 is: 307,965,715.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,362,669.33 : 551,141,772.82 = 223,154,942.09 : x
  2. Step 2: Convert to fraction form
    399,362,669.33/551,141,772.82 = 223,154,942.09/x
  3. Step 3: Cross multiply
    399,362,669.33x = 551,141,772.82 × 223,154,942.09
  4. Step 4: Simplify right side
    399,362,669.33x = 122,990,010,393,713,440
  5. Step 5: Solve for x
    x = 122,990,010,393,713,440/399,362,669.33
  6. Step 6: Final answer
    x = 307,965,715.98

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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.