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Finding the Fourth Proportional to 274,783.80, 412,234.52 and 85,240.07

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Solution

The fourth proportional to 274,783.80, 412,234.52 and 85,240.07 is: 127,878.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,783.80 : 412,234.52 = 85,240.07 : x
  2. Step 2: Convert to fraction form
    274,783.80/412,234.52 = 85,240.07/x
  3. Step 3: Cross multiply
    274,783.80x = 412,234.52 × 85,240.07
  4. Step 4: Simplify right side
    274,783.80x = 35,138,896,853.84
  5. Step 5: Solve for x
    x = 35,138,896,853.84/274,783.80
  6. Step 6: Final answer
    x = 127,878.34

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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.