Home / 389,495.20-584,184.32-123,221.11

Finding the Fourth Proportional to 389,495.20, 584,184.32 and 123,221.11

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Solution

The fourth proportional to 389,495.20, 584,184.32 and 123,221.11 is: 184,813.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,495.20 : 584,184.32 = 123,221.11 : x
  2. Step 2: Convert to fraction form
    389,495.20/584,184.32 = 123,221.11/x
  3. Step 3: Cross multiply
    389,495.20x = 584,184.32 × 123,221.11
  4. Step 4: Simplify right side
    389,495.20x = 71,983,839,738.89
  5. Step 5: Solve for x
    x = 71,983,839,738.89/389,495.20
  6. Step 6: Final answer
    x = 184,813.16

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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.