Home / 419,932.76-630,263.10-220,394.12

Finding the Fourth Proportional to 419,932.76, 630,263.10 and 220,394.12

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Solution

The fourth proportional to 419,932.76, 630,263.10 and 220,394.12 is: 330,782.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,932.76 : 630,263.10 = 220,394.12 : x
  2. Step 2: Convert to fraction form
    419,932.76/630,263.10 = 220,394.12/x
  3. Step 3: Cross multiply
    419,932.76x = 630,263.10 × 220,394.12
  4. Step 4: Simplify right side
    419,932.76x = 138,906,281,292.97
  5. Step 5: Solve for x
    x = 138,906,281,292.97/419,932.76
  6. Step 6: Final answer
    x = 330,782.20

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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.