Home / 211,217.50-291,408.38-120,508.30

Finding the Fourth Proportional to 211,217.50, 291,408.38 and 120,508.30

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Solution

The fourth proportional to 211,217.50, 291,408.38 and 120,508.30 is: 166,260.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,217.50 : 291,408.38 = 120,508.30 : x
  2. Step 2: Convert to fraction form
    211,217.50/291,408.38 = 120,508.30/x
  3. Step 3: Cross multiply
    211,217.50x = 291,408.38 × 120,508.30
  4. Step 4: Simplify right side
    211,217.50x = 35,117,128,479.55
  5. Step 5: Solve for x
    x = 35,117,128,479.55/211,217.50
  6. Step 6: Final answer
    x = 166,260.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.