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Finding the Fourth Proportional to 345,365.44, 476,413.16 and 287,513.60

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Solution

The fourth proportional to 345,365.44, 476,413.16 and 287,513.60 is: 396,609.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,365.44 : 476,413.16 = 287,513.60 : x
  2. Step 2: Convert to fraction form
    345,365.44/476,413.16 = 287,513.60/x
  3. Step 3: Cross multiply
    345,365.44x = 476,413.16 × 287,513.60
  4. Step 4: Simplify right side
    345,365.44x = 136,975,262,718.98
  5. Step 5: Solve for x
    x = 136,975,262,718.98/345,365.44
  6. Step 6: Final answer
    x = 396,609.64

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1.5x scale

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.