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Finding the Fourth Proportional to 395,487.28, 545,800.44 and 225,746.92

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Solution

The fourth proportional to 395,487.28, 545,800.44 and 225,746.92 is: 311,546.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,487.28 : 545,800.44 = 225,746.92 : x
  2. Step 2: Convert to fraction form
    395,487.28/545,800.44 = 225,746.92/x
  3. Step 3: Cross multiply
    395,487.28x = 545,800.44 × 225,746.92
  4. Step 4: Simplify right side
    395,487.28x = 123,212,768,264.65
  5. Step 5: Solve for x
    x = 123,212,768,264.65/395,487.28
  6. Step 6: Final answer
    x = 311,546.73

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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.