Home / 222,719,268.20-307,359,579.51-128,631,667.28

Finding the Fourth Proportional to 222,719,268.20, 307,359,579.51 and 128,631,667.28

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Solution

The fourth proportional to 222,719,268.20, 307,359,579.51 and 128,631,667.28 is: 177,515,737.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,719,268.20 : 307,359,579.51 = 128,631,667.28 : x
  2. Step 2: Convert to fraction form
    222,719,268.20/307,359,579.51 = 128,631,667.28/x
  3. Step 3: Cross multiply
    222,719,268.20x = 307,359,579.51 × 128,631,667.28
  4. Step 4: Simplify right side
    222,719,268.20x = 39,536,175,165,314,232
  5. Step 5: Solve for x
    x = 39,536,175,165,314,232/222,719,268.20
  6. Step 6: Final answer
    x = 177,515,737.57

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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.