Home / 220,916.16-331,413.12-80,870.40

Finding the Fourth Proportional to 220,916.16, 331,413.12 and 80,870.40

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Solution

The fourth proportional to 220,916.16, 331,413.12 and 80,870.40 is: 121,319.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,916.16 : 331,413.12 = 80,870.40 : x
  2. Step 2: Convert to fraction form
    220,916.16/331,413.12 = 80,870.40/x
  3. Step 3: Cross multiply
    220,916.16x = 331,413.12 × 80,870.40
  4. Step 4: Simplify right side
    220,916.16x = 26,801,511,579.65
  5. Step 5: Solve for x
    x = 26,801,511,579.65/220,916.16
  6. Step 6: Final answer
    x = 121,319.83

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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.