Home / 385,148,958.77-531,505,563.09-220,140,071.21

Finding the Fourth Proportional to 385,148,958.77, 531,505,563.09 and 220,140,071.21

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Solution

The fourth proportional to 385,148,958.77, 531,505,563.09 and 220,140,071.21 is: 303,793,298.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,148,958.77 : 531,505,563.09 = 220,140,071.21 : x
  2. Step 2: Convert to fraction form
    385,148,958.77/531,505,563.09 = 220,140,071.21/x
  3. Step 3: Cross multiply
    385,148,958.77x = 531,505,563.09 × 220,140,071.21
  4. Step 4: Simplify right side
    385,148,958.77x = 117,005,672,507,143,744
  5. Step 5: Solve for x
    x = 117,005,672,507,143,744/385,148,958.77
  6. Step 6: Final answer
    x = 303,793,298.26

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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.