Home / 420,916.28-580,842.81-229,892.76

Finding the Fourth Proportional to 420,916.28, 580,842.81 and 229,892.76

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Solution

The fourth proportional to 420,916.28, 580,842.81 and 229,892.76 is: 317,240.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,916.28 : 580,842.81 = 229,892.76 : x
  2. Step 2: Convert to fraction form
    420,916.28/580,842.81 = 229,892.76/x
  3. Step 3: Cross multiply
    420,916.28x = 580,842.81 × 229,892.76
  4. Step 4: Simplify right side
    420,916.28x = 133,531,556,717.06
  5. Step 5: Solve for x
    x = 133,531,556,717.06/420,916.28
  6. Step 6: Final answer
    x = 317,240.18

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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.