Home / 420,112.64-579,769.52-229,136.48

Finding the Fourth Proportional to 420,112.64, 579,769.52 and 229,136.48

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Solution

The fourth proportional to 420,112.64, 579,769.52 and 229,136.48 is: 316,216.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,112.64 : 579,769.52 = 229,136.48 : x
  2. Step 2: Convert to fraction form
    420,112.64/579,769.52 = 229,136.48/x
  3. Step 3: Cross multiply
    420,112.64x = 579,769.52 × 229,136.48
  4. Step 4: Simplify right side
    420,112.64x = 132,846,347,024.09
  5. Step 5: Solve for x
    x = 132,846,347,024.09/420,112.64
  6. Step 6: Final answer
    x = 316,216.02

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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.