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Finding the Fourth Proportional to 222,128.64, 306,544.55 and 121,526.64

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Solution

The fourth proportional to 222,128.64, 306,544.55 and 121,526.64 is: 167,710.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,128.64 : 306,544.55 = 121,526.64 : x
  2. Step 2: Convert to fraction form
    222,128.64/306,544.55 = 121,526.64/x
  3. Step 3: Cross multiply
    222,128.64x = 306,544.55 × 121,526.64
  4. Step 4: Simplify right side
    222,128.64x = 37,253,329,171.81
  5. Step 5: Solve for x
    x = 37,253,329,171.81/222,128.64
  6. Step 6: Final answer
    x = 167,710.61

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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.