Home / 313,890.20-470,835.30-219,411.80

Finding the Fourth Proportional to 313,890.20, 470,835.30 and 219,411.80

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Solution

The fourth proportional to 313,890.20, 470,835.30 and 219,411.80 is: 329,117.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,890.20 : 470,835.30 = 219,411.80 : x
  2. Step 2: Convert to fraction form
    313,890.20/470,835.30 = 219,411.80/x
  3. Step 3: Cross multiply
    313,890.20x = 470,835.30 × 219,411.80
  4. Step 4: Simplify right side
    313,890.20x = 103,306,820,676.54
  5. Step 5: Solve for x
    x = 103,306,820,676.54/313,890.20
  6. Step 6: Final answer
    x = 329,117.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.