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Finding the Fourth Proportional to 222,911.09, 307,617.30 and 127,419.86

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Solution

The fourth proportional to 222,911.09, 307,617.30 and 127,419.86 is: 175,839.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,911.09 : 307,617.30 = 127,419.86 : x
  2. Step 2: Convert to fraction form
    222,911.09/307,617.30 = 127,419.86/x
  3. Step 3: Cross multiply
    222,911.09x = 307,617.30 × 127,419.86
  4. Step 4: Simplify right side
    222,911.09x = 39,196,551,761.49
  5. Step 5: Solve for x
    x = 39,196,551,761.49/222,911.09
  6. Step 6: Final answer
    x = 175,839.40

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1.5x scale

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.