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Finding the Fourth Proportional to 548,339.61, 756,779.13 and 306,635.73

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Solution

The fourth proportional to 548,339.61, 756,779.13 and 306,635.73 is: 423,196.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,339.61 : 756,779.13 = 306,635.73 : x
  2. Step 2: Convert to fraction form
    548,339.61/756,779.13 = 306,635.73/x
  3. Step 3: Cross multiply
    548,339.61x = 756,779.13 × 306,635.73
  4. Step 4: Simplify right side
    548,339.61x = 232,055,520,976.32
  5. Step 5: Solve for x
    x = 232,055,520,976.32/548,339.61
  6. Step 6: Final answer
    x = 423,196.71

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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.