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Finding the Fourth Proportional to 274,914.18, 412,349.40 and 85,366.89

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Solution

The fourth proportional to 274,914.18, 412,349.40 and 85,366.89 is: 128,043.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,914.18 : 412,349.40 = 85,366.89 : x
  2. Step 2: Convert to fraction form
    274,914.18/412,349.40 = 85,366.89/x
  3. Step 3: Cross multiply
    274,914.18x = 412,349.40 × 85,366.89
  4. Step 4: Simplify right side
    274,914.18x = 35,200,985,871.37
  5. Step 5: Solve for x
    x = 35,200,985,871.37/274,914.18
  6. Step 6: Final answer
    x = 128,043.54

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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.