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Finding the Fourth Proportional to 389,594.55, 584,410.05 and 123,375.90

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Solution

The fourth proportional to 389,594.55, 584,410.05 and 123,375.90 is: 185,069.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,594.55 : 584,410.05 = 123,375.90 : x
  2. Step 2: Convert to fraction form
    389,594.55/584,410.05 = 123,375.90/x
  3. Step 3: Cross multiply
    389,594.55x = 584,410.05 × 123,375.90
  4. Step 4: Simplify right side
    389,594.55x = 72,102,115,887.80
  5. Step 5: Solve for x
    x = 72,102,115,887.80/389,594.55
  6. Step 6: Final answer
    x = 185,069.62

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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.