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Finding the Fourth Proportional to 300,879.26, 451,307.95 and 121,020.38

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Solution

The fourth proportional to 300,879.26, 451,307.95 and 121,020.38 is: 181,526.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,879.26 : 451,307.95 = 121,020.38 : x
  2. Step 2: Convert to fraction form
    300,879.26/451,307.95 = 121,020.38/x
  3. Step 3: Cross multiply
    300,879.26x = 451,307.95 × 121,020.38
  4. Step 4: Simplify right side
    300,879.26x = 54,617,459,420.07
  5. Step 5: Solve for x
    x = 54,617,459,420.07/300,879.26
  6. Step 6: Final answer
    x = 181,526.17

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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.