Home / 420,717.11-580,589.55-229,730.67

Finding the Fourth Proportional to 420,717.11, 580,589.55 and 229,730.67

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Solution

The fourth proportional to 420,717.11, 580,589.55 and 229,730.67 is: 317,028.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,717.11 : 580,589.55 = 229,730.67 : x
  2. Step 2: Convert to fraction form
    420,717.11/580,589.55 = 229,730.67/x
  3. Step 3: Cross multiply
    420,717.11x = 580,589.55 × 229,730.67
  4. Step 4: Simplify right side
    420,717.11x = 133,379,226,316.50
  5. Step 5: Solve for x
    x = 133,379,226,316.50/420,717.11
  6. Step 6: Final answer
    x = 317,028.29

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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.