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Finding the Fourth Proportional to 548,535.76, 757,042.14 and 306,879.58

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Solution

The fourth proportional to 548,535.76, 757,042.14 and 306,879.58 is: 423,528.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,535.76 : 757,042.14 = 306,879.58 : x
  2. Step 2: Convert to fraction form
    548,535.76/757,042.14 = 306,879.58/x
  3. Step 3: Cross multiply
    548,535.76x = 757,042.14 × 306,879.58
  4. Step 4: Simplify right side
    548,535.76x = 232,320,773,965.50
  5. Step 5: Solve for x
    x = 232,320,773,965.50/548,535.76
  6. Step 6: Final answer
    x = 423,528.95

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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.