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Finding the Fourth Proportional to 324,740.20, 487,023.90 and 100,100.20

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Solution

The fourth proportional to 324,740.20, 487,023.90 and 100,100.20 is: 150,123.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,740.20 : 487,023.90 = 100,100.20 : x
  2. Step 2: Convert to fraction form
    324,740.20/487,023.90 = 100,100.20/x
  3. Step 3: Cross multiply
    324,740.20x = 487,023.90 × 100,100.20
  4. Step 4: Simplify right side
    324,740.20x = 48,751,189,794.78
  5. Step 5: Solve for x
    x = 48,751,189,794.78/324,740.20
  6. Step 6: Final answer
    x = 150,123.67

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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.