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Finding the Fourth Proportional to 407,000.69, 561,660.95 and 225,740.37

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Solution

The fourth proportional to 407,000.69, 561,660.95 and 225,740.37 is: 311,521.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,000.69 : 561,660.95 = 225,740.37 : x
  2. Step 2: Convert to fraction form
    407,000.69/561,660.95 = 225,740.37/x
  3. Step 3: Cross multiply
    407,000.69x = 561,660.95 × 225,740.37
  4. Step 4: Simplify right side
    407,000.69x = 126,789,550,667.55
  5. Step 5: Solve for x
    x = 126,789,550,667.55/407,000.69
  6. Step 6: Final answer
    x = 311,521.71

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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.