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Finding the Fourth Proportional to 389,611.89, 584,476.26 and 136,847.82

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Solution

The fourth proportional to 389,611.89, 584,476.26 and 136,847.82 is: 205,292.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,611.89 : 584,476.26 = 136,847.82 : x
  2. Step 2: Convert to fraction form
    389,611.89/584,476.26 = 136,847.82/x
  3. Step 3: Cross multiply
    389,611.89x = 584,476.26 × 136,847.82
  4. Step 4: Simplify right side
    389,611.89x = 79,984,302,057.52
  5. Step 5: Solve for x
    x = 79,984,302,057.52/389,611.89
  6. Step 6: Final answer
    x = 205,292.25

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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.