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Finding the Fourth Proportional to 395,483.28, 545,794.92 and 225,742.92

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Solution

The fourth proportional to 395,483.28, 545,794.92 and 225,742.92 is: 311,541.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,483.28 : 545,794.92 = 225,742.92 : x
  2. Step 2: Convert to fraction form
    395,483.28/545,794.92 = 225,742.92/x
  3. Step 3: Cross multiply
    395,483.28x = 545,794.92 × 225,742.92
  4. Step 4: Simplify right side
    395,483.28x = 123,209,338,961.97
  5. Step 5: Solve for x
    x = 123,209,338,961.97/395,483.28
  6. Step 6: Final answer
    x = 311,541.21

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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.