Home / 420,240.47-579,933.20-229,257.86

Finding the Fourth Proportional to 420,240.47, 579,933.20 and 229,257.86

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Solution

The fourth proportional to 420,240.47, 579,933.20 and 229,257.86 is: 316,376.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,240.47 : 579,933.20 = 229,257.86 : x
  2. Step 2: Convert to fraction form
    420,240.47/579,933.20 = 229,257.86/x
  3. Step 3: Cross multiply
    420,240.47x = 579,933.20 × 229,257.86
  4. Step 4: Simplify right side
    420,240.47x = 132,954,242,048.43
  5. Step 5: Solve for x
    x = 132,954,242,048.43/420,240.47
  6. Step 6: Final answer
    x = 316,376.58

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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.