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Finding the Fourth Proportional to 509,957.55, 764,936.33 and 230,021.55

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Solution

The fourth proportional to 509,957.55, 764,936.33 and 230,021.55 is: 345,032.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,957.55 : 764,936.33 = 230,021.55 : x
  2. Step 2: Convert to fraction form
    509,957.55/764,936.33 = 230,021.55/x
  3. Step 3: Cross multiply
    509,957.55x = 764,936.33 × 230,021.55
  4. Step 4: Simplify right side
    509,957.55x = 175,951,839,127.80
  5. Step 5: Solve for x
    x = 175,951,839,127.80/509,957.55
  6. Step 6: Final answer
    x = 345,032.33

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Double scale
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Similar ratio
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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.