Home / 395,171.24-545,340.66-225,415.40

Finding the Fourth Proportional to 395,171.24, 545,340.66 and 225,415.40

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Solution

The fourth proportional to 395,171.24, 545,340.66 and 225,415.40 is: 311,075.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,171.24 : 545,340.66 = 225,415.40 : x
  2. Step 2: Convert to fraction form
    395,171.24/545,340.66 = 225,415.40/x
  3. Step 3: Cross multiply
    395,171.24x = 545,340.66 × 225,415.40
  4. Step 4: Simplify right side
    395,171.24x = 122,928,183,010.16
  5. Step 5: Solve for x
    x = 122,928,183,010.16/395,171.24
  6. Step 6: Final answer
    x = 311,075.73

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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.