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Finding the Fourth Proportional to 276,810.51, 381,998.49 and 149,486.10

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Solution

The fourth proportional to 276,810.51, 381,998.49 and 149,486.10 is: 206,290.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,810.51 : 381,998.49 = 149,486.10 : x
  2. Step 2: Convert to fraction form
    276,810.51/381,998.49 = 149,486.10/x
  3. Step 3: Cross multiply
    276,810.51x = 381,998.49 × 149,486.10
  4. Step 4: Simplify right side
    276,810.51x = 57,103,464,475.99
  5. Step 5: Solve for x
    x = 57,103,464,475.99/276,810.51
  6. Step 6: Final answer
    x = 206,290.81

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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.