Home / 420,251.21-579,935.18-229,264.55

Finding the Fourth Proportional to 420,251.21, 579,935.18 and 229,264.55

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Solution

The fourth proportional to 420,251.21, 579,935.18 and 229,264.55 is: 316,378.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,251.21 : 579,935.18 = 229,264.55 : x
  2. Step 2: Convert to fraction form
    420,251.21/579,935.18 = 229,264.55/x
  3. Step 3: Cross multiply
    420,251.21x = 579,935.18 × 229,264.55
  4. Step 4: Simplify right side
    420,251.21x = 132,958,575,745.35
  5. Step 5: Solve for x
    x = 132,958,575,745.35/420,251.21
  6. Step 6: Final answer
    x = 316,378.81

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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.