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Finding the Fourth Proportional to 235,706.46, 325,309.96 and 138,879.42

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Solution

The fourth proportional to 235,706.46, 325,309.96 and 138,879.42 is: 191,674.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,706.46 : 325,309.96 = 138,879.42 : x
  2. Step 2: Convert to fraction form
    235,706.46/325,309.96 = 138,879.42/x
  3. Step 3: Cross multiply
    235,706.46x = 325,309.96 × 138,879.42
  4. Step 4: Simplify right side
    235,706.46x = 45,178,858,565.02
  5. Step 5: Solve for x
    x = 45,178,858,565.02/235,706.46
  6. Step 6: Final answer
    x = 191,674.25

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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.