Home / 420,916.37-580,842.90-229,892.85

Finding the Fourth Proportional to 420,916.37, 580,842.90 and 229,892.85

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Solution

The fourth proportional to 420,916.37, 580,842.90 and 229,892.85 is: 317,240.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,916.37 : 580,842.90 = 229,892.85 : x
  2. Step 2: Convert to fraction form
    420,916.37/580,842.90 = 229,892.85/x
  3. Step 3: Cross multiply
    420,916.37x = 580,842.90 × 229,892.85
  4. Step 4: Simplify right side
    420,916.37x = 133,531,629,683.27
  5. Step 5: Solve for x
    x = 133,531,629,683.27/420,916.37
  6. Step 6: Final answer
    x = 317,240.29

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1.5x scale

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.