Home / 216,513,218.70-324,769,828.05-212,208,546.60

Finding the Fourth Proportional to 216,513,218.70, 324,769,828.05 and 212,208,546.60

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Solution

The fourth proportional to 216,513,218.70, 324,769,828.05 and 212,208,546.60 is: 318,312,819.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,513,218.70 : 324,769,828.05 = 212,208,546.60 : x
  2. Step 2: Convert to fraction form
    216,513,218.70/324,769,828.05 = 212,208,546.60/x
  3. Step 3: Cross multiply
    216,513,218.70x = 324,769,828.05 × 212,208,546.60
  4. Step 4: Simplify right side
    216,513,218.70x = 68,918,933,190,022,416
  5. Step 5: Solve for x
    x = 68,918,933,190,022,416/216,513,218.70
  6. Step 6: Final answer
    x = 318,312,819.90

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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.