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Finding the Fourth Proportional to 479,663.78, 661,918.66 and 264,799.22

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Solution

The fourth proportional to 479,663.78, 661,918.66 and 264,799.22 is: 365,413.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,663.78 : 661,918.66 = 264,799.22 : x
  2. Step 2: Convert to fraction form
    479,663.78/661,918.66 = 264,799.22/x
  3. Step 3: Cross multiply
    479,663.78x = 661,918.66 × 264,799.22
  4. Step 4: Simplify right side
    479,663.78x = 175,275,540,899.85
  5. Step 5: Solve for x
    x = 175,275,540,899.85/479,663.78
  6. Step 6: Final answer
    x = 365,413.34

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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.