Home / 420,211.73-579,888.45-229,221.02

Finding the Fourth Proportional to 420,211.73, 579,888.45 and 229,221.02

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Solution

The fourth proportional to 420,211.73, 579,888.45 and 229,221.02 is: 316,322.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,211.73 : 579,888.45 = 229,221.02 : x
  2. Step 2: Convert to fraction form
    420,211.73/579,888.45 = 229,221.02/x
  3. Step 3: Cross multiply
    420,211.73x = 579,888.45 × 229,221.02
  4. Step 4: Simplify right side
    420,211.73x = 132,922,621,995.22
  5. Step 5: Solve for x
    x = 132,922,621,995.22/420,211.73
  6. Step 6: Final answer
    x = 316,322.97

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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.