Home / 397,145.05-548,139.93-235,969.12

Finding the Fourth Proportional to 397,145.05, 548,139.93 and 235,969.12

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Solution

The fourth proportional to 397,145.05, 548,139.93 and 235,969.12 is: 325,684.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,145.05 : 548,139.93 = 235,969.12 : x
  2. Step 2: Convert to fraction form
    397,145.05/548,139.93 = 235,969.12/x
  3. Step 3: Cross multiply
    397,145.05x = 548,139.93 × 235,969.12
  4. Step 4: Simplify right side
    397,145.05x = 129,344,096,719.25
  5. Step 5: Solve for x
    x = 129,344,096,719.25/397,145.05
  6. Step 6: Final answer
    x = 325,684.78

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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.