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Finding the Fourth Proportional to 329,748, 494,289.66 and 129,991.08

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Solution

The fourth proportional to 329,748, 494,289.66 and 129,991.08 is: 194,855.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,748 : 494,289.66 = 129,991.08 : x
  2. Step 2: Convert to fraction form
    329,748/494,289.66 = 129,991.08/x
  3. Step 3: Cross multiply
    329,748x = 494,289.66 × 129,991.08
  4. Step 4: Simplify right side
    329,748x = 64,253,246,736.23
  5. Step 5: Solve for x
    x = 64,253,246,736.23/329,748
  6. Step 6: Final answer
    x = 194,855.61

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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.