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Finding the Fourth Proportional to 540,383.69, 745,768.11 and 298,661.08

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Solution

The fourth proportional to 540,383.69, 745,768.11 and 298,661.08 is: 412,173.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,383.69 : 745,768.11 = 298,661.08 : x
  2. Step 2: Convert to fraction form
    540,383.69/745,768.11 = 298,661.08/x
  3. Step 3: Cross multiply
    540,383.69x = 745,768.11 × 298,661.08
  4. Step 4: Simplify right side
    540,383.69x = 222,731,907,035.77
  5. Step 5: Solve for x
    x = 222,731,907,035.77/540,383.69
  6. Step 6: Final answer
    x = 412,173.63

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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.