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Finding the Fourth Proportional to 378,611.60, 567,917.40 and 112,413.20

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Solution

The fourth proportional to 378,611.60, 567,917.40 and 112,413.20 is: 168,619.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,611.60 : 567,917.40 = 112,413.20 : x
  2. Step 2: Convert to fraction form
    378,611.60/567,917.40 = 112,413.20/x
  3. Step 3: Cross multiply
    378,611.60x = 567,917.40 × 112,413.20
  4. Step 4: Simplify right side
    378,611.60x = 63,841,412,269.68
  5. Step 5: Solve for x
    x = 63,841,412,269.68/378,611.60
  6. Step 6: Final answer
    x = 168,619.80

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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.