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Finding the Fourth Proportional to 388,940.40, 582,719.40 and 333,644.40

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Solution

The fourth proportional to 388,940.40, 582,719.40 and 333,644.40 is: 499,873.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,940.40 : 582,719.40 = 333,644.40 : x
  2. Step 2: Convert to fraction form
    388,940.40/582,719.40 = 333,644.40/x
  3. Step 3: Cross multiply
    388,940.40x = 582,719.40 × 333,644.40
  4. Step 4: Simplify right side
    388,940.40x = 194,421,064,581.36
  5. Step 5: Solve for x
    x = 194,421,064,581.36/388,940.40
  6. Step 6: Final answer
    x = 499,873.67

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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.