Home / 324,919.12-487,385.36-100,279.69

Finding the Fourth Proportional to 324,919.12, 487,385.36 and 100,279.69

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Solution

The fourth proportional to 324,919.12, 487,385.36 and 100,279.69 is: 150,421.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,919.12 : 487,385.36 = 100,279.69 : x
  2. Step 2: Convert to fraction form
    324,919.12/487,385.36 = 100,279.69/x
  3. Step 3: Cross multiply
    324,919.12x = 487,385.36 × 100,279.69
  4. Step 4: Simplify right side
    324,919.12x = 48,874,852,811.34
  5. Step 5: Solve for x
    x = 48,874,852,811.34/324,919.12
  6. Step 6: Final answer
    x = 150,421.60

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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.