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Finding the Fourth Proportional to 235,446.76, 324,914.85 and 128,016.86

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Solution

The fourth proportional to 235,446.76, 324,914.85 and 128,016.86 is: 176,662.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,446.76 : 324,914.85 = 128,016.86 : x
  2. Step 2: Convert to fraction form
    235,446.76/324,914.85 = 128,016.86/x
  3. Step 3: Cross multiply
    235,446.76x = 324,914.85 × 128,016.86
  4. Step 4: Simplify right side
    235,446.76x = 41,594,578,864.37
  5. Step 5: Solve for x
    x = 41,594,578,864.37/235,446.76
  6. Step 6: Final answer
    x = 176,662.35

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1.5x scale

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.