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Finding the Fourth Proportional to 389,351.97, 584,047.08 and 189,842.89

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Solution

The fourth proportional to 389,351.97, 584,047.08 and 189,842.89 is: 284,773.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,351.97 : 584,047.08 = 189,842.89 : x
  2. Step 2: Convert to fraction form
    389,351.97/584,047.08 = 189,842.89/x
  3. Step 3: Cross multiply
    389,351.97x = 584,047.08 × 189,842.89
  4. Step 4: Simplify right side
    389,351.97x = 110,877,185,563.26
  5. Step 5: Solve for x
    x = 110,877,185,563.26/389,351.97
  6. Step 6: Final answer
    x = 284,773.66

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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.