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Finding the Fourth Proportional to 276,243.35, 380,889.74 and 189,070.49

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Solution

The fourth proportional to 276,243.35, 380,889.74 and 189,070.49 is: 260,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,243.35 : 380,889.74 = 189,070.49 : x
  2. Step 2: Convert to fraction form
    276,243.35/380,889.74 = 189,070.49/x
  3. Step 3: Cross multiply
    276,243.35x = 380,889.74 × 189,070.49
  4. Step 4: Simplify right side
    276,243.35x = 72,015,011,202.67
  5. Step 5: Solve for x
    x = 72,015,011,202.67/276,243.35
  6. Step 6: Final answer
    x = 260,694.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.