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Finding the Fourth Proportional to 389,519.94, 584,344.46 and 136,734.84

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Solution

The fourth proportional to 389,519.94, 584,344.46 and 136,734.84 is: 205,124.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,519.94 : 584,344.46 = 136,734.84 : x
  2. Step 2: Convert to fraction form
    389,519.94/584,344.46 = 136,734.84/x
  3. Step 3: Cross multiply
    389,519.94x = 584,344.46 × 136,734.84
  4. Step 4: Simplify right side
    389,519.94x = 79,900,246,242.99
  5. Step 5: Solve for x
    x = 79,900,246,242.99/389,519.94
  6. Step 6: Final answer
    x = 205,124.92

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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.