Home / 406,989.13-561,645-228,141.13

Finding the Fourth Proportional to 406,989.13, 561,645 and 228,141.13

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Solution

The fourth proportional to 406,989.13, 561,645 and 228,141.13 is: 314,834.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,989.13 : 561,645 = 228,141.13 : x
  2. Step 2: Convert to fraction form
    406,989.13/561,645 = 228,141.13/x
  3. Step 3: Cross multiply
    406,989.13x = 561,645 × 228,141.13
  4. Step 4: Simplify right side
    406,989.13x = 128,134,324,958.85
  5. Step 5: Solve for x
    x = 128,134,324,958.85/406,989.13
  6. Step 6: Final answer
    x = 314,834.76

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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.