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Finding the Fourth Proportional to 313,403.60, 470,105.40 and 103,062.80

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Solution

The fourth proportional to 313,403.60, 470,105.40 and 103,062.80 is: 154,594.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,403.60 : 470,105.40 = 103,062.80 : x
  2. Step 2: Convert to fraction form
    313,403.60/470,105.40 = 103,062.80/x
  3. Step 3: Cross multiply
    313,403.60x = 470,105.40 × 103,062.80
  4. Step 4: Simplify right side
    313,403.60x = 48,450,378,819.12
  5. Step 5: Solve for x
    x = 48,450,378,819.12/313,403.60
  6. Step 6: Final answer
    x = 154,594.20

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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.