Home / 419,271.06-629,004.87-138,788.22

Finding the Fourth Proportional to 419,271.06, 629,004.87 and 138,788.22

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Solution

The fourth proportional to 419,271.06, 629,004.87 and 138,788.22 is: 208,214.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,271.06 : 629,004.87 = 138,788.22 : x
  2. Step 2: Convert to fraction form
    419,271.06/629,004.87 = 138,788.22/x
  3. Step 3: Cross multiply
    419,271.06x = 629,004.87 × 138,788.22
  4. Step 4: Simplify right side
    419,271.06x = 87,298,466,278.63
  5. Step 5: Solve for x
    x = 87,298,466,278.63/419,271.06
  6. Step 6: Final answer
    x = 208,214.86

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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.