Home / 313,983.40-470,940.10-86,296.48

Finding the Fourth Proportional to 313,983.40, 470,940.10 and 86,296.48

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Solution

The fourth proportional to 313,983.40, 470,940.10 and 86,296.48 is: 129,435.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,983.40 : 470,940.10 = 86,296.48 : x
  2. Step 2: Convert to fraction form
    313,983.40/470,940.10 = 86,296.48/x
  3. Step 3: Cross multiply
    313,983.40x = 470,940.10 × 86,296.48
  4. Step 4: Simplify right side
    313,983.40x = 40,640,472,920.85
  5. Step 5: Solve for x
    x = 40,640,472,920.85/313,983.40
  6. Step 6: Final answer
    x = 129,435.10

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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.