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Finding the Fourth Proportional to 351,270.50, 526,905.75 and 129,654.50

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Solution

The fourth proportional to 351,270.50, 526,905.75 and 129,654.50 is: 194,481.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,270.50 : 526,905.75 = 129,654.50 : x
  2. Step 2: Convert to fraction form
    351,270.50/526,905.75 = 129,654.50/x
  3. Step 3: Cross multiply
    351,270.50x = 526,905.75 × 129,654.50
  4. Step 4: Simplify right side
    351,270.50x = 68,315,701,563.38
  5. Step 5: Solve for x
    x = 68,315,701,563.38/351,270.50
  6. Step 6: Final answer
    x = 194,481.75

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1.5x scale

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.