Home / 311,914.40-430,558.54-242,867.36

Finding the Fourth Proportional to 311,914.40, 430,558.54 and 242,867.36

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Solution

The fourth proportional to 311,914.40, 430,558.54 and 242,867.36 is: 335,247.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,914.40 : 430,558.54 = 242,867.36 : x
  2. Step 2: Convert to fraction form
    311,914.40/430,558.54 = 242,867.36/x
  3. Step 3: Cross multiply
    311,914.40x = 430,558.54 × 242,867.36
  4. Step 4: Simplify right side
    311,914.40x = 104,568,615,935.25
  5. Step 5: Solve for x
    x = 104,568,615,935.25/311,914.40
  6. Step 6: Final answer
    x = 335,247.80

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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.