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Finding the Fourth Proportional to 231,383.70, 347,130.99 and 79,578.18

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Solution

The fourth proportional to 231,383.70, 347,130.99 and 79,578.18 is: 119,386.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,383.70 : 347,130.99 = 79,578.18 : x
  2. Step 2: Convert to fraction form
    231,383.70/347,130.99 = 79,578.18/x
  3. Step 3: Cross multiply
    231,383.70x = 347,130.99 × 79,578.18
  4. Step 4: Simplify right side
    231,383.70x = 27,624,052,405.80
  5. Step 5: Solve for x
    x = 27,624,052,405.80/231,383.70
  6. Step 6: Final answer
    x = 119,386.34

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1.5x scale

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.