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Finding the Fourth Proportional to 307,519.70, 461,279.55 and 188,806.10

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Solution

The fourth proportional to 307,519.70, 461,279.55 and 188,806.10 is: 283,209.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,519.70 : 461,279.55 = 188,806.10 : x
  2. Step 2: Convert to fraction form
    307,519.70/461,279.55 = 188,806.10/x
  3. Step 3: Cross multiply
    307,519.70x = 461,279.55 × 188,806.10
  4. Step 4: Simplify right side
    307,519.70x = 87,092,392,845.26
  5. Step 5: Solve for x
    x = 87,092,392,845.26/307,519.70
  6. Step 6: Final answer
    x = 283,209.15

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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.