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Finding the Fourth Proportional to 340,302.21, 510,453.39 and 140,402.97

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Solution

The fourth proportional to 340,302.21, 510,453.39 and 140,402.97 is: 210,604.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,302.21 : 510,453.39 = 140,402.97 : x
  2. Step 2: Convert to fraction form
    340,302.21/510,453.39 = 140,402.97/x
  3. Step 3: Cross multiply
    340,302.21x = 510,453.39 × 140,402.97
  4. Step 4: Simplify right side
    340,302.21x = 71,669,172,529.08
  5. Step 5: Solve for x
    x = 71,669,172,529.08/340,302.21
  6. Step 6: Final answer
    x = 210,604.49

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1.5x scale

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.