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Finding the Fourth Proportional to 547,651.61, 821,555.16 and 168,603.85

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Solution

The fourth proportional to 547,651.61, 821,555.16 and 168,603.85 is: 252,929.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,651.61 : 821,555.16 = 168,603.85 : x
  2. Step 2: Convert to fraction form
    547,651.61/821,555.16 = 168,603.85/x
  3. Step 3: Cross multiply
    547,651.61x = 821,555.16 × 168,603.85
  4. Step 4: Simplify right side
    547,651.61x = 138,517,362,963.37
  5. Step 5: Solve for x
    x = 138,517,362,963.37/547,651.61
  6. Step 6: Final answer
    x = 252,929.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.