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Finding the Fourth Proportional to 389,057.68, 583,367.64 and 122,768.56

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Solution

The fourth proportional to 389,057.68, 583,367.64 and 122,768.56 is: 184,083.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,057.68 : 583,367.64 = 122,768.56 : x
  2. Step 2: Convert to fraction form
    389,057.68/583,367.64 = 122,768.56/x
  3. Step 3: Cross multiply
    389,057.68x = 583,367.64 × 122,768.56
  4. Step 4: Simplify right side
    389,057.68x = 71,619,205,113.40
  5. Step 5: Solve for x
    x = 71,619,205,113.40/389,057.68
  6. Step 6: Final answer
    x = 184,083.77

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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.