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Finding the Fourth Proportional to 389,960.64, 538,182 and 236,963.52

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Solution

The fourth proportional to 389,960.64, 538,182 and 236,963.52 is: 327,031.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,960.64 : 538,182 = 236,963.52 : x
  2. Step 2: Convert to fraction form
    389,960.64/538,182 = 236,963.52/x
  3. Step 3: Cross multiply
    389,960.64x = 538,182 × 236,963.52
  4. Step 4: Simplify right side
    389,960.64x = 127,529,501,120.64
  5. Step 5: Solve for x
    x = 127,529,501,120.64/389,960.64
  6. Step 6: Final answer
    x = 327,031.73

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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.