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Finding the Fourth Proportional to 313,399.40, 470,101.80 and 88,764.80

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Solution

The fourth proportional to 313,399.40, 470,101.80 and 88,764.80 is: 133,147.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,399.40 : 470,101.80 = 88,764.80 : x
  2. Step 2: Convert to fraction form
    313,399.40/470,101.80 = 88,764.80/x
  3. Step 3: Cross multiply
    313,399.40x = 470,101.80 × 88,764.80
  4. Step 4: Simplify right side
    313,399.40x = 41,728,492,256.64
  5. Step 5: Solve for x
    x = 41,728,492,256.64/313,399.40
  6. Step 6: Final answer
    x = 133,147.96

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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.