Home / 222,719,272.70-307,359,585.72-128,631,671.78

Finding the Fourth Proportional to 222,719,272.70, 307,359,585.72 and 128,631,671.78

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Solution

The fourth proportional to 222,719,272.70, 307,359,585.72 and 128,631,671.78 is: 177,515,743.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,719,272.70 : 307,359,585.72 = 128,631,671.78 : x
  2. Step 2: Convert to fraction form
    222,719,272.70/307,359,585.72 = 128,631,671.78/x
  3. Step 3: Cross multiply
    222,719,272.70x = 307,359,585.72 × 128,631,671.78
  4. Step 4: Simplify right side
    222,719,272.70x = 39,536,177,347,235,024
  5. Step 5: Solve for x
    x = 39,536,177,347,235,024/222,719,272.70
  6. Step 6: Final answer
    x = 177,515,743.78

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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.