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Finding the Fourth Proportional to 389,954.64, 584,952.72 and 123,735.98

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Solution

The fourth proportional to 389,954.64, 584,952.72 and 123,735.98 is: 185,610.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,954.64 : 584,952.72 = 123,735.98 : x
  2. Step 2: Convert to fraction form
    389,954.64/584,952.72 = 123,735.98/x
  3. Step 3: Cross multiply
    389,954.64x = 584,952.72 × 123,735.98
  4. Step 4: Simplify right side
    389,954.64x = 72,379,698,062.87
  5. Step 5: Solve for x
    x = 72,379,698,062.87/389,954.64
  6. Step 6: Final answer
    x = 185,610.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.