Home / 235,438.07-324,917.81-128,005.79

Finding the Fourth Proportional to 235,438.07, 324,917.81 and 128,005.79

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Solution

The fourth proportional to 235,438.07, 324,917.81 and 128,005.79 is: 176,655.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,438.07 : 324,917.81 = 128,005.79 : x
  2. Step 2: Convert to fraction form
    235,438.07/324,917.81 = 128,005.79/x
  3. Step 3: Cross multiply
    235,438.07x = 324,917.81 × 128,005.79
  4. Step 4: Simplify right side
    235,438.07x = 41,591,360,954.12
  5. Step 5: Solve for x
    x = 41,591,360,954.12/235,438.07
  6. Step 6: Final answer
    x = 176,655.21

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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.