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Finding the Fourth Proportional to 275,800.20, 413,905.10 and 109,707.40

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Solution

The fourth proportional to 275,800.20, 413,905.10 and 109,707.40 is: 164,642.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,800.20 : 413,905.10 = 109,707.40 : x
  2. Step 2: Convert to fraction form
    275,800.20/413,905.10 = 109,707.40/x
  3. Step 3: Cross multiply
    275,800.20x = 413,905.10 × 109,707.40
  4. Step 4: Simplify right side
    275,800.20x = 45,408,452,367.74
  5. Step 5: Solve for x
    x = 45,408,452,367.74/275,800.20
  6. Step 6: Final answer
    x = 164,642.57

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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.