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Finding the Fourth Proportional to 399,505.26, 550,604.33 and 302,476.66

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Solution

The fourth proportional to 399,505.26, 550,604.33 and 302,476.66 is: 416,878.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,505.26 : 550,604.33 = 302,476.66 : x
  2. Step 2: Convert to fraction form
    399,505.26/550,604.33 = 302,476.66/x
  3. Step 3: Cross multiply
    399,505.26x = 550,604.33 × 302,476.66
  4. Step 4: Simplify right side
    399,505.26x = 166,544,958,719.94
  5. Step 5: Solve for x
    x = 166,544,958,719.94/399,505.26
  6. Step 6: Final answer
    x = 416,878.01

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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.