Home / 215,133.21-322,589.63-126,413.37

Finding the Fourth Proportional to 215,133.21, 322,589.63 and 126,413.37

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Solution

The fourth proportional to 215,133.21, 322,589.63 and 126,413.37 is: 189,555.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,133.21 : 322,589.63 = 126,413.37 : x
  2. Step 2: Convert to fraction form
    215,133.21/322,589.63 = 126,413.37/x
  3. Step 3: Cross multiply
    215,133.21x = 322,589.63 × 126,413.37
  4. Step 4: Simplify right side
    215,133.21x = 40,779,641,623.29
  5. Step 5: Solve for x
    x = 40,779,641,623.29/215,133.21
  6. Step 6: Final answer
    x = 189,555.31

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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.