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Finding the Fourth Proportional to 340,382.21, 510,628.71 and 100,520.36

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Solution

The fourth proportional to 340,382.21, 510,628.71 and 100,520.36 is: 150,796.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,382.21 : 510,628.71 = 100,520.36 : x
  2. Step 2: Convert to fraction form
    340,382.21/510,628.71 = 100,520.36/x
  3. Step 3: Cross multiply
    340,382.21x = 510,628.71 × 100,520.36
  4. Step 4: Simplify right side
    340,382.21x = 51,328,581,494.20
  5. Step 5: Solve for x
    x = 51,328,581,494.20/340,382.21
  6. Step 6: Final answer
    x = 150,796.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.