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Finding the Fourth Proportional to 650,911.20, 976,276.80 and 201,940.80

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Solution

The fourth proportional to 650,911.20, 976,276.80 and 201,940.80 is: 302,883.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,911.20 : 976,276.80 = 201,940.80 : x
  2. Step 2: Convert to fraction form
    650,911.20/976,276.80 = 201,940.80/x
  3. Step 3: Cross multiply
    650,911.20x = 976,276.80 × 201,940.80
  4. Step 4: Simplify right side
    650,911.20x = 197,150,118,013.44
  5. Step 5: Solve for x
    x = 197,150,118,013.44/650,911.20
  6. Step 6: Final answer
    x = 302,883.28

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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.