Home / 428,015.21-590,637.43-234,385.33

Finding the Fourth Proportional to 428,015.21, 590,637.43 and 234,385.33

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Solution

The fourth proportional to 428,015.21, 590,637.43 and 234,385.33 is: 323,438.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,015.21 : 590,637.43 = 234,385.33 : x
  2. Step 2: Convert to fraction form
    428,015.21/590,637.43 = 234,385.33/x
  3. Step 3: Cross multiply
    428,015.21x = 590,637.43 × 234,385.33
  4. Step 4: Simplify right side
    428,015.21x = 138,436,747,948.47
  5. Step 5: Solve for x
    x = 138,436,747,948.47/428,015.21
  6. Step 6: Final answer
    x = 323,438.85

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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.