Home / 420,185.36-579,832.47-238,872.12

Finding the Fourth Proportional to 420,185.36, 579,832.47 and 238,872.12

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Solution

The fourth proportional to 420,185.36, 579,832.47 and 238,872.12 is: 329,630.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,185.36 : 579,832.47 = 238,872.12 : x
  2. Step 2: Convert to fraction form
    420,185.36/579,832.47 = 238,872.12/x
  3. Step 3: Cross multiply
    420,185.36x = 579,832.47 × 238,872.12
  4. Step 4: Simplify right side
    420,185.36x = 138,505,811,353.74
  5. Step 5: Solve for x
    x = 138,505,811,353.74/420,185.36
  6. Step 6: Final answer
    x = 329,630.27

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1.5x scale

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.