Home / 420,228.56-579,914.21-229,240.59

Finding the Fourth Proportional to 420,228.56, 579,914.21 and 229,240.59

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Solution

The fourth proportional to 420,228.56, 579,914.21 and 229,240.59 is: 316,351.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,228.56 : 579,914.21 = 229,240.59 : x
  2. Step 2: Convert to fraction form
    420,228.56/579,914.21 = 229,240.59/x
  3. Step 3: Cross multiply
    420,228.56x = 579,914.21 × 229,240.59
  4. Step 4: Simplify right side
    420,228.56x = 132,939,874,503.58
  5. Step 5: Solve for x
    x = 132,939,874,503.58/420,228.56
  6. Step 6: Final answer
    x = 316,351.36

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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.