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Finding the Fourth Proportional to 319,372.89, 479,059.40 and 129,936.34

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Solution

The fourth proportional to 319,372.89, 479,059.40 and 129,936.34 is: 194,904.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,372.89 : 479,059.40 = 129,936.34 : x
  2. Step 2: Convert to fraction form
    319,372.89/479,059.40 = 129,936.34/x
  3. Step 3: Cross multiply
    319,372.89x = 479,059.40 × 129,936.34
  4. Step 4: Simplify right side
    319,372.89x = 62,247,225,078.60
  5. Step 5: Solve for x
    x = 62,247,225,078.60/319,372.89
  6. Step 6: Final answer
    x = 194,904.54

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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.