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Finding the Fourth Proportional to 419,606.87, 629,959.01 and 249,139.73

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Solution

The fourth proportional to 419,606.87, 629,959.01 and 249,139.73 is: 374,035.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,606.87 : 629,959.01 = 249,139.73 : x
  2. Step 2: Convert to fraction form
    419,606.87/629,959.01 = 249,139.73/x
  3. Step 3: Cross multiply
    419,606.87x = 629,959.01 × 249,139.73
  4. Step 4: Simplify right side
    419,606.87x = 156,947,817,991.67
  5. Step 5: Solve for x
    x = 156,947,817,991.67/419,606.87
  6. Step 6: Final answer
    x = 374,035.39

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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.