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Finding the Fourth Proportional to 216,230.40, 324,537.60 and 127,372.80

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Solution

The fourth proportional to 216,230.40, 324,537.60 and 127,372.80 is: 191,172.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,230.40 : 324,537.60 = 127,372.80 : x
  2. Step 2: Convert to fraction form
    216,230.40/324,537.60 = 127,372.80/x
  3. Step 3: Cross multiply
    216,230.40x = 324,537.60 × 127,372.80
  4. Step 4: Simplify right side
    216,230.40x = 41,337,262,817.28
  5. Step 5: Solve for x
    x = 41,337,262,817.28/216,230.40
  6. Step 6: Final answer
    x = 191,172.30

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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.