Home / 313,974.20-470,990.10-103,612.60

Finding the Fourth Proportional to 313,974.20, 470,990.10 and 103,612.60

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Solution

The fourth proportional to 313,974.20, 470,990.10 and 103,612.60 is: 155,428.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,974.20 : 470,990.10 = 103,612.60 : x
  2. Step 2: Convert to fraction form
    313,974.20/470,990.10 = 103,612.60/x
  3. Step 3: Cross multiply
    313,974.20x = 470,990.10 × 103,612.60
  4. Step 4: Simplify right side
    313,974.20x = 48,800,508,835.26
  5. Step 5: Solve for x
    x = 48,800,508,835.26/313,974.20
  6. Step 6: Final answer
    x = 155,428.40

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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.