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Finding the Fourth Proportional to 386,450.94, 579,396.16 and 259,777.00

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Solution

The fourth proportional to 386,450.94, 579,396.16 and 259,777.00 is: 389,477.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,450.94 : 579,396.16 = 259,777.00 : x
  2. Step 2: Convert to fraction form
    386,450.94/579,396.16 = 259,777.00/x
  3. Step 3: Cross multiply
    386,450.94x = 579,396.16 × 259,777.00
  4. Step 4: Simplify right side
    386,450.94x = 150,513,792,584.94
  5. Step 5: Solve for x
    x = 150,513,792,584.94/386,450.94
  6. Step 6: Final answer
    x = 389,477.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.