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Finding the Fourth Proportional to 548,532.69, 757,045.22 and 306,828.69

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Solution

The fourth proportional to 548,532.69, 757,045.22 and 306,828.69 is: 423,462.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,532.69 : 757,045.22 = 306,828.69 : x
  2. Step 2: Convert to fraction form
    548,532.69/757,045.22 = 306,828.69/x
  3. Step 3: Cross multiply
    548,532.69x = 757,045.22 × 306,828.69
  4. Step 4: Simplify right side
    548,532.69x = 232,283,191,589.22
  5. Step 5: Solve for x
    x = 232,283,191,589.22/548,532.69
  6. Step 6: Final answer
    x = 423,462.81

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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.