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Finding the Fourth Proportional to 336,995,866.80, 505,493,800.20 and 220,769,720.10

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Solution

The fourth proportional to 336,995,866.80, 505,493,800.20 and 220,769,720.10 is: 331,154,580.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,995,866.80 : 505,493,800.20 = 220,769,720.10 : x
  2. Step 2: Convert to fraction form
    336,995,866.80/505,493,800.20 = 220,769,720.10/x
  3. Step 3: Cross multiply
    336,995,866.80x = 505,493,800.20 × 220,769,720.10
  4. Step 4: Simplify right side
    336,995,866.80x = 111,597,724,782,439,312
  5. Step 5: Solve for x
    x = 111,597,724,782,439,312/336,995,866.80
  6. Step 6: Final answer
    x = 331,154,580.15

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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.