Home / 420,916.03-580,842.47-229,892.51

Finding the Fourth Proportional to 420,916.03, 580,842.47 and 229,892.51

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Solution

The fourth proportional to 420,916.03, 580,842.47 and 229,892.51 is: 317,239.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,916.03 : 580,842.47 = 229,892.51 : x
  2. Step 2: Convert to fraction form
    420,916.03/580,842.47 = 229,892.51/x
  3. Step 3: Cross multiply
    420,916.03x = 580,842.47 × 229,892.51
  4. Step 4: Simplify right side
    420,916.03x = 133,531,333,645.54
  5. Step 5: Solve for x
    x = 133,531,333,645.54/420,916.03
  6. Step 6: Final answer
    x = 317,239.84

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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.