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Finding the Fourth Proportional to 170,335.51, 255,212.67 and 120,319.32

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Solution

The fourth proportional to 170,335.51, 255,212.67 and 120,319.32 is: 180,273.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,335.51 : 255,212.67 = 120,319.32 : x
  2. Step 2: Convert to fraction form
    170,335.51/255,212.67 = 120,319.32/x
  3. Step 3: Cross multiply
    170,335.51x = 255,212.67 × 120,319.32
  4. Step 4: Simplify right side
    170,335.51x = 30,707,016,318.03
  5. Step 5: Solve for x
    x = 30,707,016,318.03/170,335.51
  6. Step 6: Final answer
    x = 180,273.72

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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.