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Finding the Fourth Proportional to 222,920.10, 307,629.71 and 127,428.86

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Solution

The fourth proportional to 222,920.10, 307,629.71 and 127,428.86 is: 175,851.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,920.10 : 307,629.71 = 127,428.86 : x
  2. Step 2: Convert to fraction form
    222,920.10/307,629.71 = 127,428.86/x
  3. Step 3: Cross multiply
    222,920.10x = 307,629.71 × 127,428.86
  4. Step 4: Simplify right side
    222,920.10x = 39,200,903,247.43
  5. Step 5: Solve for x
    x = 39,200,903,247.43/222,920.10
  6. Step 6: Final answer
    x = 175,851.81

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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.