Home / 324,678.45-486,972-111,442.85

Finding the Fourth Proportional to 324,678.45, 486,972 and 111,442.85

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Solution

The fourth proportional to 324,678.45, 486,972 and 111,442.85 is: 167,148.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,678.45 : 486,972 = 111,442.85 : x
  2. Step 2: Convert to fraction form
    324,678.45/486,972 = 111,442.85/x
  3. Step 3: Cross multiply
    324,678.45x = 486,972 × 111,442.85
  4. Step 4: Simplify right side
    324,678.45x = 54,269,545,115.34
  5. Step 5: Solve for x
    x = 54,269,545,115.34/324,678.45
  6. Step 6: Final answer
    x = 167,148.59

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1.5x scale

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.