Home / 389,853.27-538,002-228,711.06

Finding the Fourth Proportional to 389,853.27, 538,002 and 228,711.06

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Solution

The fourth proportional to 389,853.27, 538,002 and 228,711.06 is: 315,623.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,853.27 : 538,002 = 228,711.06 : x
  2. Step 2: Convert to fraction form
    389,853.27/538,002 = 228,711.06/x
  3. Step 3: Cross multiply
    389,853.27x = 538,002 × 228,711.06
  4. Step 4: Simplify right side
    389,853.27x = 123,047,007,702.12
  5. Step 5: Solve for x
    x = 123,047,007,702.12/389,853.27
  6. Step 6: Final answer
    x = 315,623.90

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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.