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Finding the Fourth Proportional to 289,413.20, 433,774.20 and 120,933.20

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Solution

The fourth proportional to 289,413.20, 433,774.20 and 120,933.20 is: 181,255.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,413.20 : 433,774.20 = 120,933.20 : x
  2. Step 2: Convert to fraction form
    289,413.20/433,774.20 = 120,933.20/x
  3. Step 3: Cross multiply
    289,413.20x = 433,774.20 × 120,933.20
  4. Step 4: Simplify right side
    289,413.20x = 52,457,702,083.44
  5. Step 5: Solve for x
    x = 52,457,702,083.44/289,413.20
  6. Step 6: Final answer
    x = 181,255.39

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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.