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Finding the Fourth Proportional to 395,179.24, 545,351.70 and 225,423.40

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Solution

The fourth proportional to 395,179.24, 545,351.70 and 225,423.40 is: 311,086.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,179.24 : 545,351.70 = 225,423.40 : x
  2. Step 2: Convert to fraction form
    395,179.24/545,351.70 = 225,423.40/x
  3. Step 3: Cross multiply
    395,179.24x = 545,351.70 × 225,423.40
  4. Step 4: Simplify right side
    395,179.24x = 122,935,034,409.78
  5. Step 5: Solve for x
    x = 122,935,034,409.78/395,179.24
  6. Step 6: Final answer
    x = 311,086.77

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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.