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Finding the Fourth Proportional to 326,314.83, 489,413.86 and 207,633.63

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Solution

The fourth proportional to 326,314.83, 489,413.86 and 207,633.63 is: 311,413.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,314.83 : 489,413.86 = 207,633.63 : x
  2. Step 2: Convert to fraction form
    326,314.83/489,413.86 = 207,633.63/x
  3. Step 3: Cross multiply
    326,314.83x = 489,413.86 × 207,633.63
  4. Step 4: Simplify right side
    326,314.83x = 101,618,775,805.03
  5. Step 5: Solve for x
    x = 101,618,775,805.03/326,314.83
  6. Step 6: Final answer
    x = 311,413.29

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1.5x scale

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.