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Finding the Fourth Proportional to 276,682.66, 381,818.01 and 155,824.18

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Solution

The fourth proportional to 276,682.66, 381,818.01 and 155,824.18 is: 215,035.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,682.66 : 381,818.01 = 155,824.18 : x
  2. Step 2: Convert to fraction form
    276,682.66/381,818.01 = 155,824.18/x
  3. Step 3: Cross multiply
    276,682.66x = 381,818.01 × 155,824.18
  4. Step 4: Simplify right side
    276,682.66x = 59,496,478,317.48
  5. Step 5: Solve for x
    x = 59,496,478,317.48/276,682.66
  6. Step 6: Final answer
    x = 215,035.08

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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.