Home / 419,631.40-629,633.13-219,904.30

Finding the Fourth Proportional to 419,631.40, 629,633.13 and 219,904.30

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Solution

The fourth proportional to 419,631.40, 629,633.13 and 219,904.30 is: 329,953.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,631.40 : 629,633.13 = 219,904.30 : x
  2. Step 2: Convert to fraction form
    419,631.40/629,633.13 = 219,904.30/x
  3. Step 3: Cross multiply
    419,631.40x = 629,633.13 × 219,904.30
  4. Step 4: Simplify right side
    419,631.40x = 138,459,032,709.46
  5. Step 5: Solve for x
    x = 138,459,032,709.46/419,631.40
  6. Step 6: Final answer
    x = 329,953.94

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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.