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Finding the Fourth Proportional to 200,607.45, 300,939.28 and 65,682.07

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Solution

The fourth proportional to 200,607.45, 300,939.28 and 65,682.07 is: 98,532.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,607.45 : 300,939.28 = 65,682.07 : x
  2. Step 2: Convert to fraction form
    200,607.45/300,939.28 = 65,682.07/x
  3. Step 3: Cross multiply
    200,607.45x = 300,939.28 × 65,682.07
  4. Step 4: Simplify right side
    200,607.45x = 19,766,316,000.40
  5. Step 5: Solve for x
    x = 19,766,316,000.40/200,607.45
  6. Step 6: Final answer
    x = 98,532.31

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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.