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Finding the Fourth Proportional to 303,074.70, 455,596.20 and 214,938.60

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Solution

The fourth proportional to 303,074.70, 455,596.20 and 214,938.60 is: 323,105.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,074.70 : 455,596.20 = 214,938.60 : x
  2. Step 2: Convert to fraction form
    303,074.70/455,596.20 = 214,938.60/x
  3. Step 3: Cross multiply
    303,074.70x = 455,596.20 × 214,938.60
  4. Step 4: Simplify right side
    303,074.70x = 97,925,209,393.32
  5. Step 5: Solve for x
    x = 97,925,209,393.32/303,074.70
  6. Step 6: Final answer
    x = 323,105.85

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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.