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Finding the Fourth Proportional to 276,808.43, 381,995.64 and 149,484.02

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Solution

The fourth proportional to 276,808.43, 381,995.64 and 149,484.02 is: 206,287.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,808.43 : 381,995.64 = 149,484.02 : x
  2. Step 2: Convert to fraction form
    276,808.43/381,995.64 = 149,484.02/x
  3. Step 3: Cross multiply
    276,808.43x = 381,995.64 × 149,484.02
  4. Step 4: Simplify right side
    276,808.43x = 57,102,242,275.51
  5. Step 5: Solve for x
    x = 57,102,242,275.51/276,808.43
  6. Step 6: Final answer
    x = 206,287.94

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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.