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Finding the Fourth Proportional to 320,413.80, 480,620.70 and 154,525.80

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Solution

The fourth proportional to 320,413.80, 480,620.70 and 154,525.80 is: 231,788.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,413.80 : 480,620.70 = 154,525.80 : x
  2. Step 2: Convert to fraction form
    320,413.80/480,620.70 = 154,525.80/x
  3. Step 3: Cross multiply
    320,413.80x = 480,620.70 × 154,525.80
  4. Step 4: Simplify right side
    320,413.80x = 74,268,298,164.06
  5. Step 5: Solve for x
    x = 74,268,298,164.06/320,413.80
  6. Step 6: Final answer
    x = 231,788.70

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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.