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Finding the Fourth Proportional to 389,512.58, 584,210.30 and 123,238.44

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Solution

The fourth proportional to 389,512.58, 584,210.30 and 123,238.44 is: 184,839.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,512.58 : 584,210.30 = 123,238.44 : x
  2. Step 2: Convert to fraction form
    389,512.58/584,210.30 = 123,238.44/x
  3. Step 3: Cross multiply
    389,512.58x = 584,210.30 × 123,238.44
  4. Step 4: Simplify right side
    389,512.58x = 71,997,165,387.74
  5. Step 5: Solve for x
    x = 71,997,165,387.74/389,512.58
  6. Step 6: Final answer
    x = 184,839.13

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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.