Home / 209,546.88-289,124.16-123,509.40

Finding the Fourth Proportional to 209,546.88, 289,124.16 and 123,509.40

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Solution

The fourth proportional to 209,546.88, 289,124.16 and 123,509.40 is: 170,413.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,546.88 : 289,124.16 = 123,509.40 : x
  2. Step 2: Convert to fraction form
    209,546.88/289,124.16 = 123,509.40/x
  3. Step 3: Cross multiply
    209,546.88x = 289,124.16 × 123,509.40
  4. Step 4: Simplify right side
    209,546.88x = 35,709,551,527.10
  5. Step 5: Solve for x
    x = 35,709,551,527.10/209,546.88
  6. Step 6: Final answer
    x = 170,413.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.