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Finding the Fourth Proportional to 548,571.84, 756,724.31 and 319,103.31

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Solution

The fourth proportional to 548,571.84, 756,724.31 and 319,103.31 is: 440,185.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,571.84 : 756,724.31 = 319,103.31 : x
  2. Step 2: Convert to fraction form
    548,571.84/756,724.31 = 319,103.31/x
  3. Step 3: Cross multiply
    548,571.84x = 756,724.31 × 319,103.31
  4. Step 4: Simplify right side
    548,571.84x = 241,473,230,482.95
  5. Step 5: Solve for x
    x = 241,473,230,482.95/548,571.84
  6. Step 6: Final answer
    x = 440,185.25

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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.