Home / 389,927.10-538,103.11-228,784.89

Finding the Fourth Proportional to 389,927.10, 538,103.11 and 228,784.89

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Solution

The fourth proportional to 389,927.10, 538,103.11 and 228,784.89 is: 315,725.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,927.10 : 538,103.11 = 228,784.89 : x
  2. Step 2: Convert to fraction form
    389,927.10/538,103.11 = 228,784.89/x
  3. Step 3: Cross multiply
    389,927.10x = 538,103.11 × 228,784.89
  4. Step 4: Simplify right side
    389,927.10x = 123,109,860,830.01
  5. Step 5: Solve for x
    x = 123,109,860,830.01/389,927.10
  6. Step 6: Final answer
    x = 315,725.33

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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.