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Finding the Fourth Proportional to 276,722.80, 379,386.60 and 271,678.26

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Solution

The fourth proportional to 276,722.80, 379,386.60 and 271,678.26 is: 372,470.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,722.80 : 379,386.60 = 271,678.26 : x
  2. Step 2: Convert to fraction form
    276,722.80/379,386.60 = 271,678.26/x
  3. Step 3: Cross multiply
    276,722.80x = 379,386.60 × 271,678.26
  4. Step 4: Simplify right side
    276,722.80x = 103,071,091,355.32
  5. Step 5: Solve for x
    x = 103,071,091,355.32/276,722.80
  6. Step 6: Final answer
    x = 372,470.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.