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Finding the Fourth Proportional to 436,204.80, 653,961.60 and 239,212.80

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Solution

The fourth proportional to 436,204.80, 653,961.60 and 239,212.80 is: 358,629.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,204.80 : 653,961.60 = 239,212.80 : x
  2. Step 2: Convert to fraction form
    436,204.80/653,961.60 = 239,212.80/x
  3. Step 3: Cross multiply
    436,204.80x = 653,961.60 × 239,212.80
  4. Step 4: Simplify right side
    436,204.80x = 156,435,985,428.48
  5. Step 5: Solve for x
    x = 156,435,985,428.48/436,204.80
  6. Step 6: Final answer
    x = 358,629.67

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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.