Home / 420,196.56-579,879.36-229,216.92

Finding the Fourth Proportional to 420,196.56, 579,879.36 and 229,216.92

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Solution

The fourth proportional to 420,196.56, 579,879.36 and 229,216.92 is: 316,323.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,196.56 : 579,879.36 = 229,216.92 : x
  2. Step 2: Convert to fraction form
    420,196.56/579,879.36 = 229,216.92/x
  3. Step 3: Cross multiply
    420,196.56x = 579,879.36 × 229,216.92
  4. Step 4: Simplify right side
    420,196.56x = 132,918,160,870.77
  5. Step 5: Solve for x
    x = 132,918,160,870.77/420,196.56
  6. Step 6: Final answer
    x = 316,323.77

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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.