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Finding the Fourth Proportional to 548,716.51, 756,973.03 and 355,186.65

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Solution

The fourth proportional to 548,716.51, 756,973.03 and 355,186.65 is: 489,992.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,716.51 : 756,973.03 = 355,186.65 : x
  2. Step 2: Convert to fraction form
    548,716.51/756,973.03 = 355,186.65/x
  3. Step 3: Cross multiply
    548,716.51x = 756,973.03 × 355,186.65
  4. Step 4: Simplify right side
    548,716.51x = 268,866,712,890.12
  5. Step 5: Solve for x
    x = 268,866,712,890.12/548,716.51
  6. Step 6: Final answer
    x = 489,992.03

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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.