Home / 420,928.96-580,922-229,971.04

Finding the Fourth Proportional to 420,928.96, 580,922 and 229,971.04

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Solution

The fourth proportional to 420,928.96, 580,922 and 229,971.04 is: 317,381.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,928.96 : 580,922 = 229,971.04 : x
  2. Step 2: Convert to fraction form
    420,928.96/580,922 = 229,971.04/x
  3. Step 3: Cross multiply
    420,928.96x = 580,922 × 229,971.04
  4. Step 4: Simplify right side
    420,928.96x = 133,595,236,498.88
  5. Step 5: Solve for x
    x = 133,595,236,498.88/420,928.96
  6. Step 6: Final answer
    x = 317,381.91

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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.