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Finding the Fourth Proportional to 548,591.25, 757,208.13 and 319,192.86

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Solution

The fourth proportional to 548,591.25, 757,208.13 and 319,192.86 is: 440,574.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,591.25 : 757,208.13 = 319,192.86 : x
  2. Step 2: Convert to fraction form
    548,591.25/757,208.13 = 319,192.86/x
  3. Step 3: Cross multiply
    548,591.25x = 757,208.13 × 319,192.86
  4. Step 4: Simplify right side
    548,591.25x = 241,695,428,629.95
  5. Step 5: Solve for x
    x = 241,695,428,629.95/548,591.25
  6. Step 6: Final answer
    x = 440,574.71

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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.