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Finding the Fourth Proportional to 329,707.80, 494,561.70 and 289,029.60

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Solution

The fourth proportional to 329,707.80, 494,561.70 and 289,029.60 is: 433,544.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,707.80 : 494,561.70 = 289,029.60 : x
  2. Step 2: Convert to fraction form
    329,707.80/494,561.70 = 289,029.60/x
  3. Step 3: Cross multiply
    329,707.80x = 494,561.70 × 289,029.60
  4. Step 4: Simplify right side
    329,707.80x = 142,942,970,326.32
  5. Step 5: Solve for x
    x = 142,942,970,326.32/329,707.80
  6. Step 6: Final answer
    x = 433,544.40

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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.