Home / 420,227.11-579,940.80-238,955.92

Finding the Fourth Proportional to 420,227.11, 579,940.80 and 238,955.92

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Solution

The fourth proportional to 420,227.11, 579,940.80 and 238,955.92 is: 329,774.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,227.11 : 579,940.80 = 238,955.92 : x
  2. Step 2: Convert to fraction form
    420,227.11/579,940.80 = 238,955.92/x
  3. Step 3: Cross multiply
    420,227.11x = 579,940.80 × 238,955.92
  4. Step 4: Simplify right side
    420,227.11x = 138,580,287,409.54
  5. Step 5: Solve for x
    x = 138,580,287,409.54/420,227.11
  6. Step 6: Final answer
    x = 329,774.74

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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.