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Finding the Fourth Proportional to 275,184.20, 412,706.10 and 85,607.48

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Solution

The fourth proportional to 275,184.20, 412,706.10 and 85,607.48 is: 128,389.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,184.20 : 412,706.10 = 85,607.48 : x
  2. Step 2: Convert to fraction form
    275,184.20/412,706.10 = 85,607.48/x
  3. Step 3: Cross multiply
    275,184.20x = 412,706.10 × 85,607.48
  4. Step 4: Simplify right side
    275,184.20x = 35,330,729,201.63
  5. Step 5: Solve for x
    x = 35,330,729,201.63/275,184.20
  6. Step 6: Final answer
    x = 128,389.38

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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.