Home / 389,479.18-584,160.30-123,205.09

Finding the Fourth Proportional to 389,479.18, 584,160.30 and 123,205.09

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Solution

The fourth proportional to 389,479.18, 584,160.30 and 123,205.09 is: 184,789.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,479.18 : 584,160.30 = 123,205.09 : x
  2. Step 2: Convert to fraction form
    389,479.18/584,160.30 = 123,205.09/x
  3. Step 3: Cross multiply
    389,479.18x = 584,160.30 × 123,205.09
  4. Step 4: Simplify right side
    389,479.18x = 71,971,522,335.93
  5. Step 5: Solve for x
    x = 71,971,522,335.93/389,479.18
  6. Step 6: Final answer
    x = 184,789.14

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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.