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Finding the Fourth Proportional to 324,980.64, 487,292.32 and 100,279.76

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Solution

The fourth proportional to 324,980.64, 487,292.32 and 100,279.76 is: 150,364.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,980.64 : 487,292.32 = 100,279.76 : x
  2. Step 2: Convert to fraction form
    324,980.64/487,292.32 = 100,279.76/x
  3. Step 3: Cross multiply
    324,980.64x = 487,292.32 × 100,279.76
  4. Step 4: Simplify right side
    324,980.64x = 48,865,556,899.44
  5. Step 5: Solve for x
    x = 48,865,556,899.44/324,980.64
  6. Step 6: Final answer
    x = 150,364.52

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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.