Home / 420,564.11-630,690.34-150,650.21

Finding the Fourth Proportional to 420,564.11, 630,690.34 and 150,650.21

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Solution

The fourth proportional to 420,564.11, 630,690.34 and 150,650.21 is: 225,919.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,564.11 : 630,690.34 = 150,650.21 : x
  2. Step 2: Convert to fraction form
    420,564.11/630,690.34 = 150,650.21/x
  3. Step 3: Cross multiply
    420,564.11x = 630,690.34 × 150,650.21
  4. Step 4: Simplify right side
    420,564.11x = 95,013,629,012.52
  5. Step 5: Solve for x
    x = 95,013,629,012.52/420,564.11
  6. Step 6: Final answer
    x = 225,919.49

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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.