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Finding the Fourth Proportional to 389,487.36, 584,234.88 and 123,242.88

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Solution

The fourth proportional to 389,487.36, 584,234.88 and 123,242.88 is: 184,865.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,487.36 : 584,234.88 = 123,242.88 : x
  2. Step 2: Convert to fraction form
    389,487.36/584,234.88 = 123,242.88/x
  3. Step 3: Cross multiply
    389,487.36x = 584,234.88 × 123,242.88
  4. Step 4: Simplify right side
    389,487.36x = 72,002,789,207.65
  5. Step 5: Solve for x
    x = 72,002,789,207.65/389,487.36
  6. Step 6: Final answer
    x = 184,865.54

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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.