Home / 407,041.28-561,721.60-225,756.80

Finding the Fourth Proportional to 407,041.28, 561,721.60 and 225,756.80

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Solution

The fourth proportional to 407,041.28, 561,721.60 and 225,756.80 is: 311,546.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,041.28 : 561,721.60 = 225,756.80 : x
  2. Step 2: Convert to fraction form
    407,041.28/561,721.60 = 225,756.80/x
  3. Step 3: Cross multiply
    407,041.28x = 561,721.60 × 225,756.80
  4. Step 4: Simplify right side
    407,041.28x = 126,812,470,906.88
  5. Step 5: Solve for x
    x = 126,812,470,906.88/407,041.28
  6. Step 6: Final answer
    x = 311,546.95

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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.