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Finding the Fourth Proportional to 347,138.79, 479,028.99 and 194,150.50

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Solution

The fourth proportional to 347,138.79, 479,028.99 and 194,150.50 is: 267,915.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,138.79 : 479,028.99 = 194,150.50 : x
  2. Step 2: Convert to fraction form
    347,138.79/479,028.99 = 194,150.50/x
  3. Step 3: Cross multiply
    347,138.79x = 479,028.99 × 194,150.50
  4. Step 4: Simplify right side
    347,138.79x = 93,003,716,836.95
  5. Step 5: Solve for x
    x = 93,003,716,836.95/347,138.79
  6. Step 6: Final answer
    x = 267,915.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.