Home / 420,005.61-629,811.38-153,579.83

Finding the Fourth Proportional to 420,005.61, 629,811.38 and 153,579.83

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Solution

The fourth proportional to 420,005.61, 629,811.38 and 153,579.83 is: 230,297.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,005.61 : 629,811.38 = 153,579.83 : x
  2. Step 2: Convert to fraction form
    420,005.61/629,811.38 = 153,579.83/x
  3. Step 3: Cross multiply
    420,005.61x = 629,811.38 × 153,579.83
  4. Step 4: Simplify right side
    420,005.61x = 96,726,321,907.36
  5. Step 5: Solve for x
    x = 96,726,321,907.36/420,005.61
  6. Step 6: Final answer
    x = 230,297.69

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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.