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Finding the Fourth Proportional to 235,489.51, 324,977.70 and 128,060.56

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Solution

The fourth proportional to 235,489.51, 324,977.70 and 128,060.56 is: 176,724.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,489.51 : 324,977.70 = 128,060.56 : x
  2. Step 2: Convert to fraction form
    235,489.51/324,977.70 = 128,060.56/x
  3. Step 3: Cross multiply
    235,489.51x = 324,977.70 × 128,060.56
  4. Step 4: Simplify right side
    235,489.51x = 41,616,826,249.51
  5. Step 5: Solve for x
    x = 41,616,826,249.51/235,489.51
  6. Step 6: Final answer
    x = 176,724.76

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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.