Home / 419,726.40-629,743.20-170,433.60

Finding the Fourth Proportional to 419,726.40, 629,743.20 and 170,433.60

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Solution

The fourth proportional to 419,726.40, 629,743.20 and 170,433.60 is: 255,712.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,726.40 : 629,743.20 = 170,433.60 : x
  2. Step 2: Convert to fraction form
    419,726.40/629,743.20 = 170,433.60/x
  3. Step 3: Cross multiply
    419,726.40x = 629,743.20 × 170,433.60
  4. Step 4: Simplify right side
    419,726.40x = 107,329,400,651.52
  5. Step 5: Solve for x
    x = 107,329,400,651.52/419,726.40
  6. Step 6: Final answer
    x = 255,712.77

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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.