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Finding the Fourth Proportional to 380,413.92, 570,619.52 and 114,173.28

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Solution

The fourth proportional to 380,413.92, 570,619.52 and 114,173.28 is: 171,259.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,413.92 : 570,619.52 = 114,173.28 : x
  2. Step 2: Convert to fraction form
    380,413.92/570,619.52 = 114,173.28/x
  3. Step 3: Cross multiply
    380,413.92x = 570,619.52 × 114,173.28
  4. Step 4: Simplify right side
    380,413.92x = 65,149,502,230.43
  5. Step 5: Solve for x
    x = 65,149,502,230.43/380,413.92
  6. Step 6: Final answer
    x = 171,259.51

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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.