Home / 420,029.21-579,619.31-238,717.19

Finding the Fourth Proportional to 420,029.21, 579,619.31 and 238,717.19

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Solution

The fourth proportional to 420,029.21, 579,619.31 and 238,717.19 is: 329,417.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,029.21 : 579,619.31 = 238,717.19 : x
  2. Step 2: Convert to fraction form
    420,029.21/579,619.31 = 238,717.19/x
  3. Step 3: Cross multiply
    420,029.21x = 579,619.31 × 238,717.19
  4. Step 4: Simplify right side
    420,029.21x = 138,365,088,861.26
  5. Step 5: Solve for x
    x = 138,365,088,861.26/420,029.21
  6. Step 6: Final answer
    x = 329,417.78

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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.