Home / 389,848.09-538,120.11-228,644.32

Finding the Fourth Proportional to 389,848.09, 538,120.11 and 228,644.32

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Solution

The fourth proportional to 389,848.09, 538,120.11 and 228,644.32 is: 315,605.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,848.09 : 538,120.11 = 228,644.32 : x
  2. Step 2: Convert to fraction form
    389,848.09/538,120.11 = 228,644.32/x
  3. Step 3: Cross multiply
    389,848.09x = 538,120.11 × 228,644.32
  4. Step 4: Simplify right side
    389,848.09x = 123,038,106,629.28
  5. Step 5: Solve for x
    x = 123,038,106,629.28/389,848.09
  6. Step 6: Final answer
    x = 315,605.26

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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.