Home / 225,353.37-311,004.91-128,559.36

Finding the Fourth Proportional to 225,353.37, 311,004.91 and 128,559.36

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Solution

The fourth proportional to 225,353.37, 311,004.91 and 128,559.36 is: 177,421.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,353.37 : 311,004.91 = 128,559.36 : x
  2. Step 2: Convert to fraction form
    225,353.37/311,004.91 = 128,559.36/x
  3. Step 3: Cross multiply
    225,353.37x = 311,004.91 × 128,559.36
  4. Step 4: Simplify right side
    225,353.37x = 39,982,592,186.46
  5. Step 5: Solve for x
    x = 39,982,592,186.46/225,353.37
  6. Step 6: Final answer
    x = 177,421.76

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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.