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Finding the Fourth Proportional to 216,063.39, 297,998.88 and 138,546.39

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Solution

The fourth proportional to 216,063.39, 297,998.88 and 138,546.39 is: 191,085.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,063.39 : 297,998.88 = 138,546.39 : x
  2. Step 2: Convert to fraction form
    216,063.39/297,998.88 = 138,546.39/x
  3. Step 3: Cross multiply
    216,063.39x = 297,998.88 × 138,546.39
  4. Step 4: Simplify right side
    216,063.39x = 41,286,669,645.99
  5. Step 5: Solve for x
    x = 41,286,669,645.99/216,063.39
  6. Step 6: Final answer
    x = 191,085.91

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1.5x scale

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.