Home / 420,252.21-579,936.56-229,265.55

Finding the Fourth Proportional to 420,252.21, 579,936.56 and 229,265.55

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Solution

The fourth proportional to 420,252.21, 579,936.56 and 229,265.55 is: 316,380.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,252.21 : 579,936.56 = 229,265.55 : x
  2. Step 2: Convert to fraction form
    420,252.21/579,936.56 = 229,265.55/x
  3. Step 3: Cross multiply
    420,252.21x = 579,936.56 × 229,265.55
  4. Step 4: Simplify right side
    420,252.21x = 132,959,474,393.51
  5. Step 5: Solve for x
    x = 132,959,474,393.51/420,252.21
  6. Step 6: Final answer
    x = 316,380.19

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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.