Home / 406,948.16-561,578.40-225,660.80

Finding the Fourth Proportional to 406,948.16, 561,578.40 and 225,660.80

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Solution

The fourth proportional to 406,948.16, 561,578.40 and 225,660.80 is: 311,406.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,948.16 : 561,578.40 = 225,660.80 : x
  2. Step 2: Convert to fraction form
    406,948.16/561,578.40 = 225,660.80/x
  3. Step 3: Cross multiply
    406,948.16x = 561,578.40 × 225,660.80
  4. Step 4: Simplify right side
    406,948.16x = 126,726,231,006.72
  5. Step 5: Solve for x
    x = 126,726,231,006.72/406,948.16
  6. Step 6: Final answer
    x = 311,406.33

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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.