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Finding the Fourth Proportional to 351,289.61, 526,961.07 and 137,954.59

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Solution

The fourth proportional to 351,289.61, 526,961.07 and 137,954.59 is: 206,942.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,289.61 : 526,961.07 = 137,954.59 : x
  2. Step 2: Convert to fraction form
    351,289.61/526,961.07 = 137,954.59/x
  3. Step 3: Cross multiply
    351,289.61x = 526,961.07 × 137,954.59
  4. Step 4: Simplify right side
    351,289.61x = 72,696,699,616.57
  5. Step 5: Solve for x
    x = 72,696,699,616.57/351,289.61
  6. Step 6: Final answer
    x = 206,942.36

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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.