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Finding the Fourth Proportional to 231,603.95, 347,433.94 and 81,813.58

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Solution

The fourth proportional to 231,603.95, 347,433.94 and 81,813.58 is: 122,730.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,603.95 : 347,433.94 = 81,813.58 : x
  2. Step 2: Convert to fraction form
    231,603.95/347,433.94 = 81,813.58/x
  3. Step 3: Cross multiply
    231,603.95x = 347,433.94 × 81,813.58
  4. Step 4: Simplify right side
    231,603.95x = 28,424,815,313.49
  5. Step 5: Solve for x
    x = 28,424,815,313.49/231,603.95
  6. Step 6: Final answer
    x = 122,730.27

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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.