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Finding the Fourth Proportional to 490,937.81, 677,415.13 and 276,065.06

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Solution

The fourth proportional to 490,937.81, 677,415.13 and 276,065.06 is: 380,925.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,937.81 : 677,415.13 = 276,065.06 : x
  2. Step 2: Convert to fraction form
    490,937.81/677,415.13 = 276,065.06/x
  3. Step 3: Cross multiply
    490,937.81x = 677,415.13 × 276,065.06
  4. Step 4: Simplify right side
    490,937.81x = 187,010,645,121.28
  5. Step 5: Solve for x
    x = 187,010,645,121.28/490,937.81
  6. Step 6: Final answer
    x = 380,925.33

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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.