Home / 407,121.67-561,836.91-225,827.70

Finding the Fourth Proportional to 407,121.67, 561,836.91 and 225,827.70

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Solution

The fourth proportional to 407,121.67, 561,836.91 and 225,827.70 is: 311,647.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,121.67 : 561,836.91 = 225,827.70 : x
  2. Step 2: Convert to fraction form
    407,121.67/561,836.91 = 225,827.70/x
  3. Step 3: Cross multiply
    407,121.67x = 561,836.91 × 225,827.70
  4. Step 4: Simplify right side
    407,121.67x = 126,878,337,160.41
  5. Step 5: Solve for x
    x = 126,878,337,160.41/407,121.67
  6. Step 6: Final answer
    x = 311,647.22

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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.