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Finding the Fourth Proportional to 395,481.12, 545,803.02 and 225,740.76

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Solution

The fourth proportional to 395,481.12, 545,803.02 and 225,740.76 is: 311,544.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,481.12 : 545,803.02 = 225,740.76 : x
  2. Step 2: Convert to fraction form
    395,481.12/545,803.02 = 225,740.76/x
  3. Step 3: Cross multiply
    395,481.12x = 545,803.02 × 225,740.76
  4. Step 4: Simplify right side
    395,481.12x = 123,209,988,545.10
  5. Step 5: Solve for x
    x = 123,209,988,545.10/395,481.12
  6. Step 6: Final answer
    x = 311,544.55

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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.