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Finding the Fourth Proportional to 389,415.07, 584,155.41 and 123,169.69

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Solution

The fourth proportional to 389,415.07, 584,155.41 and 123,169.69 is: 184,764.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,415.07 : 584,155.41 = 123,169.69 : x
  2. Step 2: Convert to fraction form
    389,415.07/584,155.41 = 123,169.69/x
  3. Step 3: Cross multiply
    389,415.07x = 584,155.41 × 123,169.69
  4. Step 4: Simplify right side
    389,415.07x = 71,950,240,761.52
  5. Step 5: Solve for x
    x = 71,950,240,761.52/389,415.07
  6. Step 6: Final answer
    x = 184,764.91

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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.