Home / 428,418.79-591,193.91-234,789.62

Finding the Fourth Proportional to 428,418.79, 591,193.91 and 234,789.62

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Solution

The fourth proportional to 428,418.79, 591,193.91 and 234,789.62 is: 323,996.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,418.79 : 591,193.91 = 234,789.62 : x
  2. Step 2: Convert to fraction form
    428,418.79/591,193.91 = 234,789.62/x
  3. Step 3: Cross multiply
    428,418.79x = 591,193.91 × 234,789.62
  4. Step 4: Simplify right side
    428,418.79x = 138,806,191,106.22
  5. Step 5: Solve for x
    x = 138,806,191,106.22/428,418.79
  6. Step 6: Final answer
    x = 323,996.51

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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.