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Finding the Fourth Proportional to 329,801.90, 494,119.65 and 279,646.70

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Solution

The fourth proportional to 329,801.90, 494,119.65 and 279,646.70 is: 418,975.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,801.90 : 494,119.65 = 279,646.70 : x
  2. Step 2: Convert to fraction form
    329,801.90/494,119.65 = 279,646.70/x
  3. Step 3: Cross multiply
    329,801.90x = 494,119.65 × 279,646.70
  4. Step 4: Simplify right side
    329,801.90x = 138,178,929,527.66
  5. Step 5: Solve for x
    x = 138,178,929,527.66/329,801.90
  6. Step 6: Final answer
    x = 418,975.54

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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.