Home / 420,261.25-579,976.71-238,989.52

Finding the Fourth Proportional to 420,261.25, 579,976.71 and 238,989.52

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Solution

The fourth proportional to 420,261.25, 579,976.71 and 238,989.52 is: 329,814.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,261.25 : 579,976.71 = 238,989.52 : x
  2. Step 2: Convert to fraction form
    420,261.25/579,976.71 = 238,989.52/x
  3. Step 3: Cross multiply
    420,261.25x = 579,976.71 × 238,989.52
  4. Step 4: Simplify right side
    420,261.25x = 138,608,355,534.08
  5. Step 5: Solve for x
    x = 138,608,355,534.08/420,261.25
  6. Step 6: Final answer
    x = 329,814.74

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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.