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Finding the Fourth Proportional to 509,554.20, 764,136.90 and 154,450.20

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Solution

The fourth proportional to 509,554.20, 764,136.90 and 154,450.20 is: 231,616.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,554.20 : 764,136.90 = 154,450.20 : x
  2. Step 2: Convert to fraction form
    509,554.20/764,136.90 = 154,450.20/x
  3. Step 3: Cross multiply
    509,554.20x = 764,136.90 × 154,450.20
  4. Step 4: Simplify right side
    509,554.20x = 118,021,097,032.38
  5. Step 5: Solve for x
    x = 118,021,097,032.38/509,554.20
  6. Step 6: Final answer
    x = 231,616.38

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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.