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Finding the Fourth Proportional to 268,165.28, 401,635.56 and 128,022.32

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Solution

The fourth proportional to 268,165.28, 401,635.56 and 128,022.32 is: 191,741.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,165.28 : 401,635.56 = 128,022.32 : x
  2. Step 2: Convert to fraction form
    268,165.28/401,635.56 = 128,022.32/x
  3. Step 3: Cross multiply
    268,165.28x = 401,635.56 × 128,022.32
  4. Step 4: Simplify right side
    268,165.28x = 51,418,316,185.70
  5. Step 5: Solve for x
    x = 51,418,316,185.70/268,165.28
  6. Step 6: Final answer
    x = 191,741.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.