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Finding the Fourth Proportional to 395,358.56, 545,554.08 and 225,560

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Solution

The fourth proportional to 395,358.56, 545,554.08 and 225,560 is: 311,249.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,358.56 : 545,554.08 = 225,560 : x
  2. Step 2: Convert to fraction form
    395,358.56/545,554.08 = 225,560/x
  3. Step 3: Cross multiply
    395,358.56x = 545,554.08 × 225,560
  4. Step 4: Simplify right side
    395,358.56x = 123,055,178,284.80
  5. Step 5: Solve for x
    x = 123,055,178,284.80/395,358.56
  6. Step 6: Final answer
    x = 311,249.56

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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.