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Finding the Fourth Proportional to 324,750.20, 487,038.90 and 100,110.20

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Solution

The fourth proportional to 324,750.20, 487,038.90 and 100,110.20 is: 150,138.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,750.20 : 487,038.90 = 100,110.20 : x
  2. Step 2: Convert to fraction form
    324,750.20/487,038.90 = 100,110.20/x
  3. Step 3: Cross multiply
    324,750.20x = 487,038.90 × 100,110.20
  4. Step 4: Simplify right side
    324,750.20x = 48,757,561,686.78
  5. Step 5: Solve for x
    x = 48,757,561,686.78/324,750.20
  6. Step 6: Final answer
    x = 150,138.67

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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.