Home / 222,107.30-306,515.32-121,505.30

Finding the Fourth Proportional to 222,107.30, 306,515.32 and 121,505.30

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Solution

The fourth proportional to 222,107.30, 306,515.32 and 121,505.30 is: 167,681.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,107.30 : 306,515.32 = 121,505.30 : x
  2. Step 2: Convert to fraction form
    222,107.30/306,515.32 = 121,505.30/x
  3. Step 3: Cross multiply
    222,107.30x = 306,515.32 × 121,505.30
  4. Step 4: Simplify right side
    222,107.30x = 37,243,235,911.20
  5. Step 5: Solve for x
    x = 37,243,235,911.20/222,107.30
  6. Step 6: Final answer
    x = 167,681.28

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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.