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Finding the Fourth Proportional to 509,975.80, 764,963.70 and 230,039.80

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Solution

The fourth proportional to 509,975.80, 764,963.70 and 230,039.80 is: 345,059.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,975.80 : 764,963.70 = 230,039.80 : x
  2. Step 2: Convert to fraction form
    509,975.80/764,963.70 = 230,039.80/x
  3. Step 3: Cross multiply
    509,975.80x = 764,963.70 × 230,039.80
  4. Step 4: Simplify right side
    509,975.80x = 175,972,096,555.26
  5. Step 5: Solve for x
    x = 175,972,096,555.26/509,975.80
  6. Step 6: Final answer
    x = 345,059.70

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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.