Home / 259,826.12-389,590.36-79,864.73

Finding the Fourth Proportional to 259,826.12, 389,590.36 and 79,864.73

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Solution

The fourth proportional to 259,826.12, 389,590.36 and 79,864.73 is: 119,751.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,826.12 : 389,590.36 = 79,864.73 : x
  2. Step 2: Convert to fraction form
    259,826.12/389,590.36 = 79,864.73/x
  3. Step 3: Cross multiply
    259,826.12x = 389,590.36 × 79,864.73
  4. Step 4: Simplify right side
    259,826.12x = 31,114,528,912.00
  5. Step 5: Solve for x
    x = 31,114,528,912.00/259,826.12
  6. Step 6: Final answer
    x = 119,751.35

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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.