Home / 420,064.86-579,723.93-238,833.66

Finding the Fourth Proportional to 420,064.86, 579,723.93 and 238,833.66

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Solution

The fourth proportional to 420,064.86, 579,723.93 and 238,833.66 is: 329,610.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,064.86 : 579,723.93 = 238,833.66 : x
  2. Step 2: Convert to fraction form
    420,064.86/579,723.93 = 238,833.66/x
  3. Step 3: Cross multiply
    420,064.86x = 579,723.93 × 238,833.66
  4. Step 4: Simplify right side
    420,064.86x = 138,457,587,991.48
  5. Step 5: Solve for x
    x = 138,457,587,991.48/420,064.86
  6. Step 6: Final answer
    x = 329,610.02

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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.