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Finding the Fourth Proportional to 276,651.30, 387,836.70 and 276,651.30

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Solution

The fourth proportional to 276,651.30, 387,836.70 and 276,651.30 is: 387,836.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,651.30 : 387,836.70 = 276,651.30 : x
  2. Step 2: Convert to fraction form
    276,651.30/387,836.70 = 276,651.30/x
  3. Step 3: Cross multiply
    276,651.30x = 387,836.70 × 276,651.30
  4. Step 4: Simplify right side
    276,651.30x = 107,295,527,242.71
  5. Step 5: Solve for x
    x = 107,295,527,242.71/276,651.30
  6. Step 6: Final answer
    x = 387,836.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.