Home / 420,155.00-579,811.06-238,866.98

Finding the Fourth Proportional to 420,155.00, 579,811.06 and 238,866.98

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Solution

The fourth proportional to 420,155.00, 579,811.06 and 238,866.98 is: 329,634.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,155.00 : 579,811.06 = 238,866.98 : x
  2. Step 2: Convert to fraction form
    420,155.00/579,811.06 = 238,866.98/x
  3. Step 3: Cross multiply
    420,155.00x = 579,811.06 × 238,866.98
  4. Step 4: Simplify right side
    420,155.00x = 138,497,714,272.33
  5. Step 5: Solve for x
    x = 138,497,714,272.33/420,155.00
  6. Step 6: Final answer
    x = 329,634.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.