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Finding the Fourth Proportional to 345,936.80, 518,905.20 and 345,936.80

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Solution

The fourth proportional to 345,936.80, 518,905.20 and 345,936.80 is: 518,905.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,936.80 : 518,905.20 = 345,936.80 : x
  2. Step 2: Convert to fraction form
    345,936.80/518,905.20 = 345,936.80/x
  3. Step 3: Cross multiply
    345,936.80x = 518,905.20 × 345,936.80
  4. Step 4: Simplify right side
    345,936.80x = 179,508,404,391.36
  5. Step 5: Solve for x
    x = 179,508,404,391.36/345,936.80
  6. Step 6: Final answer
    x = 518,905.20

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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.