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Finding the Fourth Proportional to 389,487.75, 584,231.63 and 93,999.75

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Solution

The fourth proportional to 389,487.75, 584,231.63 and 93,999.75 is: 140,999.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,487.75 : 584,231.63 = 93,999.75 : x
  2. Step 2: Convert to fraction form
    389,487.75/584,231.63 = 93,999.75/x
  3. Step 3: Cross multiply
    389,487.75x = 584,231.63 × 93,999.75
  4. Step 4: Simplify right side
    389,487.75x = 54,917,626,692.09
  5. Step 5: Solve for x
    x = 54,917,626,692.09/389,487.75
  6. Step 6: Final answer
    x = 140,999.63

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1.5x scale

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.