Home / 420,729.12-580,606.11-229,742.67

Finding the Fourth Proportional to 420,729.12, 580,606.11 and 229,742.67

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Solution

The fourth proportional to 420,729.12, 580,606.11 and 229,742.67 is: 317,044.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,729.12 : 580,606.11 = 229,742.67 : x
  2. Step 2: Convert to fraction form
    420,729.12/580,606.11 = 229,742.67/x
  3. Step 3: Cross multiply
    420,729.12x = 580,606.11 × 229,742.67
  4. Step 4: Simplify right side
    420,729.12x = 133,389,997,929.71
  5. Step 5: Solve for x
    x = 133,389,997,929.71/420,729.12
  6. Step 6: Final answer
    x = 317,044.84

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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.