Home / 420,142.30-579,804.26-229,162.52

Finding the Fourth Proportional to 420,142.30, 579,804.26 and 229,162.52

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Solution

The fourth proportional to 420,142.30, 579,804.26 and 229,162.52 is: 316,248.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,142.30 : 579,804.26 = 229,162.52 : x
  2. Step 2: Convert to fraction form
    420,142.30/579,804.26 = 229,162.52/x
  3. Step 3: Cross multiply
    420,142.30x = 579,804.26 × 229,162.52
  4. Step 4: Simplify right side
    420,142.30x = 132,869,405,632.03
  5. Step 5: Solve for x
    x = 132,869,405,632.03/420,142.30
  6. Step 6: Final answer
    x = 316,248.58

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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.