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Finding the Fourth Proportional to 548,993.18, 757,610.48 and 307,275.75

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Solution

The fourth proportional to 548,993.18, 757,610.48 and 307,275.75 is: 424,040.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,993.18 : 757,610.48 = 307,275.75 : x
  2. Step 2: Convert to fraction form
    548,993.18/757,610.48 = 307,275.75/x
  3. Step 3: Cross multiply
    548,993.18x = 757,610.48 × 307,275.75
  4. Step 4: Simplify right side
    548,993.18x = 232,795,329,218.05
  5. Step 5: Solve for x
    x = 232,795,329,218.05/548,993.18
  6. Step 6: Final answer
    x = 424,040.47

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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.