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Finding the Fourth Proportional to 645,287.70, 967,059.64 and 245,710.50

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Solution

The fourth proportional to 645,287.70, 967,059.64 and 245,710.50 is: 368,233.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,287.70 : 967,059.64 = 245,710.50 : x
  2. Step 2: Convert to fraction form
    645,287.70/967,059.64 = 245,710.50/x
  3. Step 3: Cross multiply
    645,287.70x = 967,059.64 × 245,710.50
  4. Step 4: Simplify right side
    645,287.70x = 237,616,707,674.22
  5. Step 5: Solve for x
    x = 237,616,707,674.22/645,287.70
  6. Step 6: Final answer
    x = 368,233.75

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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.